Equipment, Tools

RectorSeal’s New HVAC Electrical Protection Devices Combine Enhanced Performance With Outstanding Limited Warranty

June 05, 2023

Houston, TX, May 23, 20231 – RectorSeal® LLC, a leading manufacturer of quality HVAC/R and plumbing tools and accessories introduces two new products to the RSH® Series of Surge Protection Devices (SPD) and Voltage Range Monitoring (VRM) kits.

RectorSeal RSH Series devices protect HVAC equipment from electrical surges, brownouts, and other voltage disturbances resulting from transient over-voltage and natural-cause surges. The RSH series is a preferred choice for HVAC technicians by offering easy installation, proven performance, and an outstanding limited warranty. RSH Series products are weather-rated under NEMA 3R and can be installed within minutes to the outdoor disconnect electrical box.

The RSH-VRM60A Voltage Range Monitoring Device is designed to support 120/240 Single Phase, 60 Amp Double Pole Capacity Relays for loads between 15 to 60 Amps. It can be used with Ductless and Ducted HVAC systems. Additional features include push-button cut-off setpoint adjustments, a voltage read-out screen, a large, easy-to-read LED digital display, and dual red and green LED diagnostic indicators. Additional features include an over/under voltage cut-off device with an auto restore and push-button cut-off setpoint adjustments to cover a wide range of input voltages. A 2-year limited warranty covers the voltage range monitoring device.

The RSH-50VRM Kit is a Surge Protector and Voltage Range Monitor designed to support 120/240 Single Phase, 60 Amp Double Pole Capacity Relays between 15 to 60 Amp loads. No laptop or programming tools are required resulting in easy set-up, and the device is field programmable. Features include an all-mode surge protector with gas tube and thermally fused (MOV) suppression technology. Also, it has a large LCD digital display and dual red and green LED diagnostic indicators. A non-volatile memory retains all settings, and an event log is available when power is lost. More than 300 over/under voltage and power-loss events are kept in the resettable internal memory.

The RSH-50VRM Kit has adjustable mounting flanges for easy installation. Further, it has a heavy-duty hinged enclosure with dual latching mechanisms. NEMA 3R weather-resistant, rated for protection against rain, sleet, and snow, the device is undamaged by ice formation, allowing for outdoor use.

A 2-year limited warranty covers the voltage range monitoring device, and the surge protection device for single-phase has a limited lifetime warranty.

Both devices are RoHS compliant UL listed and available from select RectorSeal distributors and representatives.

Founded in 1937, RectorSeal has centered around a simple growth mission: To provide innovative solutions to the professional trades. RectorSeal supports the heating and cooling, plumbing, electrical, and construction industries with a wide variety of products, services, and support programs.

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About RectorSeal

The RectorSeal LLC, is a manufacturer of chemical, mechanical, and firestopping products for the professional trades. The company is centered on a simple mission: To provide innovative solutions to the professional trades. RectorSeal wants to help professionals in the heating & cooling, plumbing, electrical, and construction industries perform their work faster and with greater reliability. Founded in 1937, RectorSeal originally focused on manufacturing specialty chemical sealants. One of our first products, RectorSeal Number 5, became a staple of the plumbing industry, serving as a common thread sealant throughout the U.S. Since these beginnings, RectorSeal has continued to grow by expanding its offering of chemical and mechanical products to support the tradesman. Today, RectorSeal has developed a robust line of chemical, mechanical, and firestopping products. These products are distributed through an extensive wholesale distribution network. Primary products included thread sealants, firestopping sealants, plastic pipe cements, anti-seize compounds, fluxes, lubricants, chemical cleaners, duct sealants, leak locators, and other specialized products. Many of these products have built a strong following among contractors due to their differentiated performance and from being the first to tackle challenges faced by the professional trade. For more information, visit, email:, or call (800) 231-3345.

About CSW Industrials

CSWI is a diversified industrial growth company with well-established, scalable platforms and domain expertise across two segments: Industrial Products and Specialty chemicals. CSWI’s products include mechanical products for heating, ventilation, air conditioning, and refrigeration applications, sealants, and high-performance specialty lubricants. Markets the CSWI serves include: HVAC/R, architecturally-specified building products, general industrial, plumbing, rail, energy, and mining. For more information, please visit