Potter MR-101/C/R Multi-voltage Control Relay 10A Spdt

Product Description

The POTTER MR-101/C/R is a multi-voltage control relay designed for use in fire alarm, HVAC, security, lighting control, temperature control, and energy management systems. It features a single-pole double-throw (SPDT) contact rated at 10 amps resistive and accepts four input control voltages: 18 to 35 volts DC or AC, 120 volts AC, or 230 volts AC, wired to the appropriate input terminals. A red LED at each relay position illuminates when the coil is energized, providing a clear local status indication. The unit ships in a red enclosure and is rated for continuous duty use. Installation is performed by licensed electricians or fire alarm technicians familiar with low-voltage and line-voltage control wiring.

The MR-101/C/R is part of the MR-100 Series and is suited for residential and commercial applications wherever local or remote switching of electrical loads is required. Typical deployments include fire alarm annunciation circuits, HVAC interlock control, lighting control panels, security system interfaces, and temperature control applications. The relay module can be snapped apart from a standard four-position master assembly and used as a standalone single-module unit, giving installers flexibility when panel space is limited or only one relay position is needed on a given circuit.

Key Features

• Accepts 18 to 35 volts DC or AC, 120 volts AC, or 230 volts AC input - a single SKU covers four common control voltages
• SPDT resistive contacts rated at 10 amps for switching electrical loads
• Red LED per relay position illuminates when the coil is energized
• Snap-apart modular design allows single, dual, or triple relay configurations from a four-position master assembly
• Continuous duty rated with UL recognized relays rated at 10,000,000 mechanical operations
• UL Listed as a Control Unit Accessory and UUKL Listed

Compatibility

The MR-101/C/R is part of the MR-100 Series and is designed for use with HVAC systems, fire alarm systems, security systems, lighting control systems, temperature control systems, and energy management systems. It is an enclosure-mount module compatible with standard four-position MR-100 Series master assemblies.

Installation Notes

This relay is installed by licensed electricians or certified fire alarm technicians. De-energize all affected circuits and verify zero voltage at terminals before making any wiring connections. DC input terminals are polarized - observe correct polarity when wiring 24-volt DC control circuits. Installations involving fire alarm control circuits must comply with NFPA 72 and applicable local codes; line-voltage wiring must comply with the NEC.