DC Motor Protector SN-25

The SN-25 Series is a high current DC motor protector which delivers the benefit of locked rotor and overload protection in a robust integrated package. A broad range of design and mounting options enable this device to be custom engineered to meet your needs.

Ask for Price

Applications

- Over current and temperature protection in DC Motors.
- Refrigerator Compressors
- DC blowers
- Engine Cooling fan motors
- Pump Motor

Features

- Tin plated steel base and tab.
- Available in covered and uncovered versions
- Designed to trip time or temperature specifications.
- Multiple bimetallic resistivities available.

Specifications

Nominal Operating Voltage	12-48 Volts DC
Typical voltage drop at operating current	200 mV max
Cut-off temperature range	60ºC to 166ºC
Operating Trip Current Range	10-125 Amps

The SN-25 Series has been designed to offer protection for a wide range of 12 volt to 48 volt applications in a minimum package size. The SN-25 Series is suitable for both intermittent and continuous rated motors. The SN-25 is also designed for manual switching operations. The SN-25 is physically small and has unique 'snap action' bimetal disc, ensuring a positive make and break switching action for enhanced contact life.

Selection Code Chart

automatic thermostat manufacturers, automatic reset thermostat exporters

Line Diagram

Sectional view

Graph

The Current VS Trip Time graph shows that whenever there is a locked rotor condition and the current exceeds 2.5 times the rated current the circuit is opened by SN-25 within 4-7sec without harming the motor.

Yes! I am interested

Click here to download PDF

Snap Disc Thermostat	Thermal Overhead Protector	Other Products
Automatic Reset Thermostat Manual Reset Thermostat Miniature Thermostat N-9	Thermal Overload Protector DC Motor Protector SN-25	Special Purpose Switches Heaters And more..