ICM Controls ICM104 Relay

The ICM Controls ICM104 Delay-On-Make Timer is an adjustable HVAC/R time-delay relay designed for applications requiring controlled equipment startup. Operating at 18–30 VAC, 50/60 Hz, the ICM104 provides an adjustable 10–1,000 second time delay.

When input power is applied, the timing cycle begins. Once the selected delay expires, the load energizes. The control uses precise digital circuitry with an isolated, high-power SPDT (1 Form C) relay output.

The normally open contact is rated at 20 amps at 240 VAC, while the normally closed contact is rated at 10 amps at 240 VAC. Motor load ratings are 2 HP N.O. and 1/2 HP N.C. at 120/240 VAC.

The ICM104 is suitable for HVAC/R equipment and other electrical applications where delayed or staggered equipment startup is required.

Key Benefits

• ICM104 Delay-On-Make Timer
• Adjustable 10–1,000 second delay
• 18–30 VAC, 50/60 Hz input
• High-power SPDT (1 Form C) relay output
• N.O. contact rating: 20A at 240 VAC
• N.C. contact rating: 10A at 240 VAC
• Motor rating: 2 HP N.O. at 120/240 VAC
• Motor rating: 1/2 HP N.C. at 120/240 VAC
• Input-to-output isolation
• Compatible with anticipator-type thermostats
• Designed for delayed or staggered equipment startup
• Manufacturer-listed replacement for select MARS time-delay controls

Common Questions

What does the ICM104 do?
The ICM104 delays equipment startup after input power is applied. Once the selected delay period expires, the relay energizes the connected load.

What is the adjustable time range?
The ICM104 can be adjusted from 10 to 1,000 seconds.

What voltage does the ICM104 require?
The control operates on 18–30 VAC at 50/60 Hz.

Does the ICM104 have an SPDT output?
Yes. It uses a high-power SPDT (1 Form C) relay with normally open and normally closed contacts.

Can the ICM104 be used for staggered equipment startup?
Yes. It is suitable for applications requiring delayed or staggered startup. Always verify the control voltage, contact load, wiring configuration, and required timing before installation.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.