Honeywell Bi-Metallic Thermostat, Opens at +120°C, +150°C Max, NC, Manual Reset | 2455RM-90820471

Designed for applications that require status indication of over temperature
Snap action bi-metallic disc, electrically and thermally isolated from the switch, actuates the normally closed contacts
Manual reset can be operated at approximately 70% of the opening temperature
Dust-free phenolic housing with heat sensitive disc retained by a heat conducting stainless steel end cap
1/4in. tab termination
Contacts are rated to 250Vac 10A with a maximum contact resistance of 50mΩ
Dielectric strength of 2000Vac

UL recognised component, CSA Certified

This Honeywell bi-metallic thermostat is designed for applications that need a status indication for over-temperature regulation. To actuate the normally closed (NC) contacts, it uses a temperature-sensitive disc, which is thermally and electrically isolated from the SPST (single pole, single throw) switch itself. The high-performance silver-nickel-alloy contacts open when surface or ambient temperatures increase to the operating setpoint (+120°C). The manual reset can be operated at approximately 70% of the operating temperature. With an operating temperature range between +50°C and +150°C, this device is suitable for heat-intensive environments.

• High-capacity 10A rating compatible with HVAC (heating, ventilation and air conditioning) systems
• Compact size enables rapid response to temperature changes
• Factory calibrated to your specification
• Phenolic housing keeps the device dust-free
• Quick-connect terminals for ease of installation

• Industrial and commercial heating systems
• Factory automation
• Medical equipment

When a bi-metallic disc is heated, each of the two metals it contains react at a different rate. As one expands more than the other, the disc flexes, causing it to break the circuit and activate the system.

Thermal Switches