Potter 1000137-1 (CR-135C-MP) Heat Detector

Product Description

The POTTER ELECTRIC SIGNAL CO. US 1000137-1 (CR-135C-MP) is a closed position heat detector designed to sense elevated temperatures in protected spaces and trigger an alarm response. This thermal detector is a fixed-temperature device that activates when the surrounding air reaches its rated threshold, making it a reliable component in fire detection systems. It is typically installed by licensed fire alarm technicians or electricians working within commercial, industrial, or residential fire protection applications. The closed position design indicates a normally closed circuit state that opens upon heat activation, integrating directly into compatible fire alarm control panel loops.

This heat detector is suited for environments where smoke detectors are not appropriate, such as areas with dust, steam, or combustion byproducts that could cause nuisance alarms. Typical installation scenarios include boiler rooms, kitchens, garages, attic spaces, and storage areas. It is classified as a thermal detector and sold as an individual unit. Fire alarm contractors and electricians are the primary installers for this type of device in both new construction and retrofit fire detection projects.

Key Features

• Closed position (normally closed) circuit output triggers on heat activation
• Fixed-temperature thermal detection technology reduces nuisance alarms in dirty or steamy environments
• Sold as a single unit, suitable for individual zone replacement or new installation
• Classified as a thermal detector per fire protection product categories

Compatibility

Designed as an OEM-style replacement or new-install thermal detector for fire alarm systems requiring a closed position, fixed-temperature heat detector in the thermal detector product category.

Installation Notes

Installation should be performed by a licensed fire alarm technician or electrician in accordance with NFPA 72 and applicable local fire codes. De-energize the fire alarm control panel circuit before wiring or replacing this device. Verify the circuit polarity and loop supervision requirements of the control panel before connecting. Do not install in areas subject to ambient temperatures that exceed the detector rated threshold under normal operating conditions.