The ABB SARR is a thermistor motor protection relay designed to monitor and protect motors by detecting excessive temperature in the windings. It operates with a combined voltage of –V or –V AC and features one normally open (NO) and one normally closed (NC) output contact. The relay supports both manual reset (via pushbutton) and remote reset (by disconnecting the power supply). It is equipped with two LEDs for indicating “ready” and “trip” status, providing clear visual feedback on the operational state of the motor and relay.

Key Features:

• Thermistor motor protection: Monitors motor winding temperature

• Voltage range: –V or –V AC (combined)

• Output contacts: NO + NC

• Reset options: Manual (pushbutton) or remote (disconnect power)

• Status indication: Two LEDs for “ready” and “trip”

• Maximum number of sensors:

• Sensor circuit: Dynamic discontinuity monitoring, short-circuit protection

• Contact rating: A at V AC (AC-), . A at V DC (DC-), A at V DC (DC-)

• Rated insulation voltage: V

• Overvoltage category: III

• Pollution degree: (housing), (PCB)

• Mounting: DIN rail

• Protection: Short-circuit protected, sensor circuit monitoring

• Weight: ~ g (varies by variant)

ABB – 1SAR600111R0005 – Thermistor Motor Protection Relay, 110–120V/220–240V AC