Mars 33242 24V SPST-NO Time Delay Relay

Description

Overview

The Mars 33242 is a 24-volt, single-pole single-throw normally open (SPST-NO) time delay relay engineered for dependable timed switching in residential and light commercial HVAC applications. By introducing a precise time delay into the control circuit, this relay helps protect compressors, blower motors, and other system components from the stress of rapid cycling and short-cycling conditions — extending equipment life and improving overall system efficiency.

Key Features

• 24V operating voltage — compatible with standard HVAC low-voltage control circuits
• SPST-NO (Single-Pole Single-Throw, Normally Open) contact configuration
• Time delay function prevents short cycling and protects system components
• Compact, easy-to-install design suitable for a wide range of HVAC equipment
• Manufactured by Mars — a trusted name in HVAC electrical components

Common Applications

• Compressor short-cycle protection
• Blower motor on/off delay control
• Fan and pump sequencing
• General HVAC timed switching applications

Why Choose the Mars 33242?

Mars has built a strong reputation in the HVAC industry for producing high-quality electrical components that meet the demands of professional technicians. The 33242 time delay relay is a straightforward, reliable solution for adding timed control logic to any 24V HVAC control circuit, helping protect expensive equipment and reduce service calls.