RectorSeal RSH-50 60A Non-Fused HVAC Disconnect with Built-In Surge Protection | NEMA 4X Weatherproof Disconnect Box
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Professional HVAC Disconnect with Built-In Surge Protection
The RectorSeal RSH-50 60A Non-Fused HVAC Disconnect with Built-In Surge Protection combines safe electrical disconnect functionality with advanced surge protection in one contractor-grade solution. Designed for air conditioners, heat pumps, condensers, and ductless mini-split systems, this all-in-one disconnect box helps protect sensitive HVAC electronics from damaging voltage spikes, lightning strikes, and transient power surges.
Featuring a factory-installed RSH-50 Surge Protective Device, this pre-wired disconnect reduces installation time, minimizes parts inventory, and simplifies field wiring while helping maintain safe, code-compliant installations.
Two Devices. One Install. Half the Time.
Unlike traditional disconnect installations that require separate surge protection components, the RectorSeal RSH-50 PDB combines both products into one integrated unit. HVAC professionals benefit from faster installation, cleaner wiring, and improved long-term equipment protection.
- Built-In RSH-50 Surge Protection: Factory-installed surge protector helps defend HVAC systems against transient over-voltage and natural power surges.
- 60A Non-Fused Disconnect: Provides safe electrical disconnect functionality for HVAC service and maintenance applications.
- Advanced GDT & TFMOV Technology: Long-lasting hybrid Gas Discharge Tube and Thermally Fused MOV protection delivers dependable surge suppression.
- 50kA Surge Protection Capacity: Helps protect sensitive inverter boards, compressors, and HVAC electronics from damaging electrical surges.
- Exterior Disconnect Switch: Convenient outside switch operation eliminates the need for interior pull-out disconnect mechanisms for easier service access.
- NEMA 4X Weatherproof Enclosure: Heavy-duty polycarbonate enclosure provides superior waterproof protection compared to traditional metal disconnect boxes.
- IP66 Rated Protection: Weather-tight gasket design helps protect against moisture, dust, and harsh outdoor conditions.
- Impact & UV Resistant Housing: Durable polycarbonate construction designed for demanding jobsite environments.
- Pad-Lockable Safety Lockout: Can be locked in both ON and OFF positions for improved technician safety during service.
- Easy Field Installation: Includes three extra knockouts with reducers and connectors for flexible installation options.
- ETL Listed: Certified for safe, code-compliant installation in the United States and Canada.
Built for Modern Mini Splits, Heat Pumps & Air Conditioners
Today's high-efficiency HVAC systems use advanced inverter technology and sensitive control electronics that can be vulnerable to utility fluctuations and lightning-related surges. The RectorSeal RSH-50 disconnect with built-in surge protection helps reduce the risk of expensive equipment damage while providing safe and reliable disconnect access for servicing HVAC systems.
Perfect for residential and light commercial HVAC applications, including mini splits, heat pumps, condensers, and outdoor air conditioning units.
Product Specifications
- Brand: RectorSeal
- Model: RSH-50 PDB Non-Fused Disconnect with Surge Protection
- Part Number: 96433
- Product Type: Non-Fused HVAC Disconnect Box with Surge Protection
- Amperage: 60A
- Voltage Compatibility: Single-Phase 120/240V
- Surge Capacity: Up to 50,000-Amp Single Surges
- Repetitive Surge Capacity: Up to 10,000-Amp Repetitive Surges
- Protection Technology: Hybrid Gas Discharge Tube (GDT) & Thermally Fused MOV (TFMOV)
- Enclosure Rating: NEMA 4X / IP66
- Housing Material: UV & Impact Resistant Polycarbonate
- Switch Type: Exterior Operated Non-Fused Disconnect
- Certification: ETL US & C Listed
- Application: Air Conditioners, Heat Pumps, Mini Splits, Condensing Units, HVAC Systems
Triple-Layer Warranty Protection
The RectorSeal RSH-50 PDB is backed by multiple levels of protection, including a 3-year disconnect box warranty, 5-year/$5,000 downline equipment coverage, and a limited-lifetime replacement warranty on the RSH-50 surge protection device.
Professional HVAC Protection Without the Contractor Markup
Get contractor-grade HVAC disconnects and integrated surge protection trusted by installers nationwide. The RectorSeal RSH-50 PDB delivers reliable weatherproof performance, simplified installation, and advanced surge protection for today’s sensitive HVAC systems.
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HVAC Surge Protectors – Protect Your Investment the Right Way
When it comes to protecting your HVAC system, installing a high-quality surge protector is one of the smartest decisions you can make. Modern HVAC systems—including mini splits, heat pumps, and inverter-driven equipment—are highly sensitive to power fluctuations, voltage spikes, and electrical surges.
That’s why professionals across the industry trust RectorSeal surge protection devices. Known for reliability and performance, RectorSeal products are designed to protect critical HVAC components from costly electrical damage, extending the life of your system and reducing the risk of unexpected failure.
Why HVAC Surge Protection Matters
- Protects control boards and sensitive electronics from voltage spikes
- Prevents costly repairs caused by lightning strikes and power surges
- Extends the lifespan of your mini split or central HVAC system
- Helps maintain system performance and efficiency
- Provides peace of mind for homeowners and contractors alike
Why Choose RectorSeal Surge Protectors?
RectorSeal has become a trusted name in HVAC protection, offering surge protection solutions engineered specifically for heating and cooling systems. Whether you need a simple inline surge protector or a more advanced unit with integrated disconnect functionality, RectorSeal delivers dependable protection backed by proven performance in the field.
- Designed specifically for HVAC applications
- Available in multiple configurations (inline, disconnect, panel protection)
- Built for durability in residential and commercial environments
- Easy to install for HVAC professionals
Learn More About HVAC Surge Protection
Not sure which surge protector is right for your system? We break it all down in our in-depth guide:
Why HVAC Surge Protection Is Essential (Complete Guide)
This guide explains how surge protectors work, why they are critical for modern HVAC systems, and how to choose the right protection for your setup.
Shop HVAC Surge Protectors
Browse our selection of RectorSeal HVAC surge protectors designed to protect your system from damaging electrical surges. Whether you're a homeowner or a professional installer, investing in surge protection is one of the most cost-effective ways to safeguard your equipment.
See Our Complete Section of Surge ProtectionRated 4.7 / 5 Stars
4700+ Verified Reviews
Comfort That Speaks for Itself
See why homeowners and pros alike trust MRCOOL DIY systems to deliver comfort, savings, and easy installation.
I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!
Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency
Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.
I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.
Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.
Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!
I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.
I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!
Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency
Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.
I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.
Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.
Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!
I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.
I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!
Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency
Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.
I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.
Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.
Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!
I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.
I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!
Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency
Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.
I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.
Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.
Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!
I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.
I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!
Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency
Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.
I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.
Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.
Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!
I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.
I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!
Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency
Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.
I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.
Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.
Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!
I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.
I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!
Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency
Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.
I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.
Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.
Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!
I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.
I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!
Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency
Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.
I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.
Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.
Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!
I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.
I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!
Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency
Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.
I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.
Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.
Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!
I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.
I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!
Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency
Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.
I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.
Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.
Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!
I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.
DIY-Friendly Installation
Designed specifically for homeowners, the MRCOOL DIY system includes an installation template for the wall-mounted air handler, making it easy to place holes for refrigerant lines, cables, and drain connections accurately. The simplified design eliminates guesswork and helps you complete installation faster with confidence.
Heat Pump Technology – Heating & Cooling
The MRCOOL DIY system is a true heat pump, providing both heating and cooling in one system. It transfers heat rather than generating it, delivering highly efficient comfort year-round. The system can heat in temperatures as low as -13°F and cool in temperatures up to 122°F, keeping your home comfortable in nearly any climate.
Variable-Speed DC Inverter Compressor
The MRCOOL DIY system uses advanced DC inverter technology to continuously adjust compressor speed based on your comfort needs. Instead of constantly turning on and off like traditional systems, it runs at the optimal level to maintain temperature while using less energy. This results in lower energy costs, quieter operation, and longer system life.
Smart Control with Wi-Fi & Voice Assistants
Take full control of your comfort from anywhere using the MRCOOL SmartHVAC app on iOS or Android. Adjust temperature, monitor usage, and set automated comfort schedules. The system also integrates with Amazon Alexa and Google Assistant for convenient voice control.
No-Vac Quick Connect® Line Sets
Installation is simple thanks to MRCOOL’s patented Quick Connect® fittings. The pre-charged line sets come sealed with refrigerant and connect using basic hand tools — no vacuum pump or specialized HVAC equipment required. Just align the fittings, tighten with a wrench, and your system is ready to go.
Protected DIYPro™ Communication Cable
The MRCOOL DIYPro™ communication cable connects the indoor air handler and outdoor condenser while protecting electrical wiring inside a durable protective conduit. This heavy-duty cable helps shield wiring from weather exposure and accidental damage during installation.
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