Multicomp Pro Thermal Switch, NC, 140°C, 10A

The Multicomp Pro MP-11-140/120/E111B14H221 is a snap-action thermostat switch designed to regulate the temperature of a system or environment. It senses temperature changes at 140°C and is normally closed (N/C), making it ideal for applications that require a circuit to be closed until a specific temperature threshold is reached.

With a contact rating of 10A at 250V, this switch effectively manages heating or cooling systems in a variety of settings, including HVAC and industrial equipment. The automatic reset function ensures the switch returns to its original state once the temperature cools to the reset point of 120°C, providing hassle-free operation.

Key Features

• Normally closed (N/C) contact operation
• Thermal switch with set temperature of 140°C ±4°C and reset temperature of 120°C ±6°C
• Maximum resistance between terminals: 50mΩ at DC5V/0.25A
• Insulation resistance: minimum 100MΩ with DC500V
• Dielectric strength: 1500VAC for 1 minute
• Maximum ambient temperature: 170°C

Construction and Materials

The switch is built with high-quality materials for durability and reliable performance. It features AgNi/Cu (T2) stationary/movable contacts, a brass stationary arm, and a PF case with a top cover. The bimetal disc is made of a special alloy, and the moveable arm is constructed from alloy copper. The terminal is brass with nickel plating, ensuring excellent conductivity and corrosion resistance.

Certifications and Compliance

This thermal switch is certified according to international standards, including GB14536.1-2008, GB14536.10-2008, GB/T22687-2008, EN60730-1, and EN60730-2-9, ensuring it meets stringent safety and performance requirements.

Installation

The sensor housing features a flange mount for secure attachment to surfaces, and the sensor terminals are quick connect for easy wiring. The product range is MP