SIEMENS
SIEMENS 3RU21160EB0 Overload Relay 0.28–0.40 A 690 V AC
Thermal overload relay with 0.28–0.40 A range, 690 V AC rating, Trip Class 10, auto/manual reset and screw terminals for direct contactor mounting
- Thermal protection for 0.28–0.40 A circuits
- Trip Class 10 ensures reliable overload response
- 690 V AC rating suits industrial power systems
- Direct contactor mounting simplifies panel assembly
- Auto and manual reset options for flexible recovery
Application fit
The SIEMENS 3RU21160EB0 overload relay protects three-phase motors drawing between 0.28 A and 0.40 A at up to 690 V AC. It suits IEC-style panels using the SIRIUS S00 frame and provides both auto and manual reset options for maintenance flexibility.
Compatibility check
Verify that the contactor accepts direct mounting and uses screw-terminal wiring before ordering. Confirm the motor full-load current falls within the 0.28 A to 0.40 A range and that the supply voltage does not exceed 690 V AC for correct trip-class 10 operation.
Build integration
The relay mounts directly onto a compatible SIRIUS contactor, saving DIN-rail space and reducing wiring time. Its integrated thermal units and 1NO/1NC auxiliary contacts deliver overload signalling and control-circuit interlocking without extra components.
Highlights
- Thermal protection for 0.28–0.40 A circuits
- Trip Class 10 ensures reliable overload response
- 690 V AC rating suits industrial power systems
- Direct contactor mounting simplifies panel assembly
- Auto and manual reset options for flexible recovery
Specifications
| Brand | SIEMENS |
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Questions about this item
Does the 3RU21160EB0 overload relay come with thermal units included or must they be purchased separately?
The relay includes thermal units so no separate purchase is needed for overload protection.
How do I decide between the 0.28 A minimum and 0.40 A maximum current settings on this relay?
Set the dial within the 0.28–0.40 A range to match the motor full-load current shown on its nameplate.
What does the 690 V AC rating mean when the relay is installed on a contactor?
It is the maximum voltage the relay can safely switch on a three-phase circuit up to 690 V AC.
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