

Surge protective device R-SP is designed to protect HVAC equipment from voltage surges, lightning-induced transients, and electrical disturbances.
Installed at the disconnect box or junction box, this surge protective device helps prevent damage to sensitive electronic components and reduces the risk of unexpected equipment failure caused by unstable power conditions.
Modern HVAC systems rely heavily on control boards and electronic components that are highly vulnerable to power surges. The R-SP surge protective device provides reliable protection at the point of power entry, improving system reliability and extending equipment service life.
Key Features
Three modes of protection: L1-N, L2-N, L1-L2
Maximum continuous operating voltage (MCOV):
L-N: 150V
L-L: 300V
Voltage protection rating (VPR):
L-N: 700V
L-L: 1200V
Type 4X enclosure, suitable for indoor and outdoor installations
TPMOV® technology for enhanced surge protection performance
Mounting feet for improved installation stability
Weather-rated NEMA 4X construction
ANSI/UL 1449 5th Edition compliant
LED Status Indicators
The surge protective device R-SP features built-in LED indicators for quick visual inspection:
Green LED: Unit is operating correctly and providing protection
Red LED: Protection capacity has been reduced and the unit should be replaced
This clear status indication allows technicians to easily monitor protection condition without additional testing.
Applications
The R-SP surge protective device is suitable for a wide range of HVAC applications, including:
Air conditioning systems
Heat pumps
Rooftop units
Commercial and residential HVAC equipment
Its compact design and straightforward installation make it an effective surge protection solution for HVAC contractors and system installers.
Installation
Designed for easy installation at a disconnect box or junction box, the surge protective device R-SP minimizes installation time while meeting current electrical safety standards.









