Description
The Littelfuse ARP42S is a 120VAC alternating relay designed to automatically alternate operation between two electrical loads, helping equalize runtime and extend equipment life. Commonly used in duplex pump and HVAC systems, it ensures balanced usage of motors and reduces wear. This relay features a DPDT (double-pole, double-throw) contact configuration and an 11-pin plug-in design for easy installation. A built-in selector switch allows users to choose automatic alternation or lock operation to a specific load, while LED indicators provide clear status of relay operation and active output.
Key Features:
- Alternating relay for equalizing runtime between two loads
- Operating voltage: 120VAC
- DPDT (double-pole, double-throw) output contacts
- 11-pin plug-in (octal-style) configuration
- Selector switch for alternating or fixed load (A or B) operation
- LED indicators for relay status and active load
- Contact rating: up to 10A resistive at 120/240VAC or 28VDC
- Ideal for duplex pump systems, HVAC, and motor control applications







Reviews
There are no reviews yet.