SIEMENS
SIEMENS 3RU21160GB0 Overload Relay 0.45-0.63 A 690 V AC
Thermal overload relay protects motors at 0.45–0.63 A with 690 V AC rating and trip class 10
- Thermal protection for motors up to 0.63 A
- Trip Class 10 ensures reliable overload response
- 690 V AC rating suits industrial power systems
- Auto and manual reset options for flexible recovery
- Direct contactor mounting simplifies panel assembly
SIEMENS 3RU21160GB0 Overload Relay
The SIEMENS 3RU21160GB0 is a thermal overload relay designed for motor protection in industrial control panels. It suits electricians and maintenance engineers who need reliable overload monitoring for three-phase motors up to 690 V AC.
Direct contactor mounting
This relay mounts directly onto a compatible SIRIUS contactor, reducing panel wiring time. The package includes the required three thermal units, and the unit offers both automatic and manual reset modes for flexible recovery after a trip event.
Verify contactor compatibility
Ensure your contactor matches the SIRIUS series and S00 frame size for direct mounting. Confirm the motor full-load current falls between 0.45 A and 0.63 A, and that your control circuit uses screw terminals for connection.
Highlights
- Thermal protection for motors up to 0.63 A
- Trip Class 10 ensures reliable overload response
- 690 V AC rating suits industrial power systems
- Auto and manual reset options for flexible recovery
- Direct contactor mounting simplifies panel assembly
Specifications
| Brand | SIEMENS |
|---|
Questions about this item
Will the thermal units inside this 3RU21160GB0 relay need periodic replacement?
The relay includes thermal units that are built for continuous operation; they are not a scheduled maintenance item unless a trip event indicates damage.
What stops the 0.63 A maximum current setting from being exceeded during prolonged motor starts?
Trip Class 10 limits the time the relay will carry overload current before opening the 1NO/1NC auxiliary contacts.
How much heat does the S00 frame generate when mounted directly to a contactor and run all day at 690 V AC?
The thermal overload design dissipates heat through the screw terminals and direct contactor mounting, keeping temperature rise within IEC limits for continuous duty.
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