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Siemens 3RU6116-1KB0 — Overload Relays

Siemens 3RU6116-1KB0 SIRIUS Thermal Overload Relay, 9-12.5 A

MPN3RU6116-1KB0

Siemens SIRIUS 3RU6116-1KB0 thermal overload relay, size S00, adjustable 9-12.5 A, Trip Class 10, screw terminals for main and auxiliary circuits, manual/auto reset.

Siemens 3RU6116-1KB0 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RU6116-1KB0 — Identification
ParameterValue
Product brand nameSIRIUS
Product designationThermal overload relay
Combinable contactor sizesS00
3RU6116-1KB0 — Protection & Trip
ParameterValue
Overload current setting range9 ... 12.5 A
Trip classCLASS 10
Overload release typethermal
3RU6116-1KB0 — Electrical (main circuit)
ParameterValue
Rated operational current12.5 A
Poles (main circuit)3
Rated operating frequency50 ... 60 Hz
Rated insulation voltage (AC, pollution degree 3)690 V
Rated surge withstand voltage6 kV
Main current circuitscrew-type terminals
Power loss at rated current (hot)6.6 W
Per pole2.2 W
3RU6116-1KB0 — Auxiliary contacts
ParameterValue
Switching current at 24 V2 A
Switching current at 110 V0.22 A
Switching current at 230 V2 A
3RU6116-1KB0 — Connection & Mounting
ParameterValue
Mounting / fastening methodContactor mounting
Mounting positionany
Main-circuit connector arrangementTop and bottom
Auxiliary/control circuit connection typescrew-type terminals
Conductor cross-section: solid or stranded2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Conductor cross-section: finely stranded with ferrule2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
3RU6116-1KB0 — Environmental
ParameterValue
Operating temperature-40 ... +70 °C
Transport temperature-55 ... +80 °C
Relative humidity, operating0 ... 90 %
Max. installation altitude2 000 m
3RU6116-1KB0 — Mechanical
ParameterValue
Width45 mm
Height76 mm
Depth70 mm

Product details

Integrator note: 3RU6116-1KB0 SIRIUS thermal overload relay

The Siemens 3RU6116-1KB0 is a SIRIUS thermal overload relay sized for motor protection in the 9 to 12.5 A range, Trip Class 10. The adjustable current-response value (9...12.5 A) lets you dial in the motor FLA on commissioning; Both main and auxiliary circuits use screw-type terminals. The main circuit accepts 2×(0.5...1.5 mm²) solid or 2×(0.75...2.5 mm²) stranded; the auxiliary side takes 2×(0.5...1.5 mm²) or 2×(0.75...2.5 mm²) as well. Tightening torque for the main contacts is 0.8...1.2 N·m. The relay sits in any mounting position and needs only 6 mm side spacing to grounded parts — tight enough for dense DIN-rail layouts.

Frequently asked questions

What is the adjustable current range of 3RU6116-1KB0?

The adjustable current response value is 9 to 12.5 A, set via the dial on the front face.

What contactor size does 3RU6116-1KB0 mount onto?

It mounts onto S00-frame contactors, the company-specific size S00. This is the same footprint as the 3RT2 series contactors.

What compliance documentation is available for 3RU6116-1KB0?

The relay carries a substance prohibition date of 05/01/2012, indicating RoHS/REACH compliance. It is rated for 690 V insulation voltage with pollution degree 3, and surge voltage resistance of 6 kV.

How do I get current pricing and availability for 3RU6116-1KB0?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm quote.

MPN
3RU6116-1KB0