Description
Functional Devices RIBMU1C — Multi-Voltage SPDT Relay Module
The Functional Devices RIBMU1C is a versatile, enclosed Single-Pole Double-Throw (SPDT) relay module engineered for dependable switching in commercial and residential HVAC control applications. Designed to accept a wide range of input voltages, this relay bridges low-voltage control signals and line-voltage loads, making it an ideal interface device for building automation systems, HVAC equipment, and general electrical control circuits.
Key Features
- Multi-voltage coil accepts 10–30VAC or 10–30VDC input signals
- Also accepts 120VAC coil input for direct line-voltage control
- 15A SPDT (Single-Pole Double-Throw) output contacts for versatile switching
- Enclosed relay module design for protection and ease of installation
- Compact form factor suitable for panel mounting or enclosure use
- Ideal for interfacing low-voltage BAS/DDC outputs with line-voltage loads
- Broad compatibility with HVAC equipment, fan coils, AHUs, and more
Electrical Specifications
- Coil Input Voltage: 10–30VAC/DC or 120VAC
- Output Contact Rating: 15A SPDT
- Contact Configuration: Single-Pole Double-Throw (SPDT) — provides both normally open (NO) and normally closed (NC) switching
Applications
- Building automation and DDC control systems
- HVAC equipment switching and interlock circuits
- Fan, pump, and damper actuator control
- General-purpose line-voltage load switching from low-voltage signals
- Commercial and light industrial control panels
Why Choose the RIBMU1C?
Functional Devices is a trusted name in HVAC relay and control products. The RIBMU1C’s wide coil voltage acceptance — spanning both AC and DC signals from 10 to 30 volts, plus 120VAC — eliminates the need for multiple relay SKUs across different control system voltages. The robust 15A SPDT contact rating handles a wide range of HVAC loads, providing contractors and controls technicians with a reliable, go-to switching solution.
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