SIEMENS
SIEMENS 3RU21160AB0 Overload Relay 0.11-0.16 A
Thermal overload relay protects motors from 0.11 A to 0.16 A with trip class 10 and 690 V AC rating
- Thermal protection for motors up to 0.16 A
- Trip Class 10 ensures reliable overload response
- Direct contactor mounting simplifies panel assembly
- Auto and manual reset options add flexibility
- Screw terminals provide secure wiring connections
Industrial motor protection
The SIEMENS 3RU21160AB0 overload relay protects three-phase motors by interrupting the contactor coil when current exceeds the set threshold. It suits maintenance engineers and panel builders who need reliable thermal overload protection for small motors in industrial control panels.
Replaces worn or undersized relays
Swapping an existing relay with this unit restores proper trip behaviour when the old device no longer trips at the correct current or when the motor load has changed into the 0.11 to 0.16 A range. The jump is worth it when nuisance tripping or failure to trip risks motor damage or unplanned downtime.
Mounts directly on SIRIUS S00 contactors
Direct-to-contactor mounting eliminates separate DIN-rail hardware and reduces panel space. Screw terminals accept standard control wiring without special tools. The relay includes thermal units and offers both automatic and manual reset modes, so the installer can choose the recovery method that matches the safety procedure. Trip class 10 and a 690 V AC rating cover common industrial control voltages.
Highlights
- Thermal protection for motors up to 0.16 A
- Trip Class 10 ensures reliable overload response
- Direct contactor mounting simplifies panel assembly
- Auto and manual reset options add flexibility
- Screw terminals provide secure wiring connections
Specifications
| Brand | SIEMENS |
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Questions about this item
What contactor frame size does the 3RU21160AB0 mount on directly?
It mounts directly on SIRIUS S00 frame contactors using the direct-to-contactor mounting style.
Which terminals must be wired during installation, and which step is often missed?
Wire the three screw terminals for the main circuit plus the 1NO/1NC auxiliary contacts; the step often missed is setting the current dial between 0.11 A and 0.16 A before energising.
What part must be replaced after a thermal trip, and does the relay include it?
The relay includes the three required thermal units; after a trip they are not separately replaceable — the complete relay is replaced.
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