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Siemens 3RU6116-0CB1 — Overload Relays

Siemens 3RU6116-0CB1 SIRIUS Thermal Overload Relay, 0.18–0.2

MPN3RU6116-0CB1

Siemens SIRIUS 3RU6116-0CB1 thermal overload relay, size S00, 0.18–0.25 A adjustable, Class 10, 690 V, 50/60 Hz, screw terminals, stand-alone installation.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RU6116-0CB1 — Identification
ParameterValue
Product brand nameSIRIUS
Product designationThermal overload relay
Combinable contactor sizesS00
3RU6116-0CB1 — Protection & Trip
ParameterValue
Overload current setting range0.18 ... 0.25 A
Trip classCLASS 10
Overload release typethermal
3RU6116-0CB1 — Electrical (main circuit)
ParameterValue
Rated operational current0.25 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)4.8 W
Per pole1.6 W
3RU6116-0CB1 — Auxiliary contacts
ParameterValue
Switching current at 24 V2 A
Switching current at 110 V0.22 A
Switching current at 230 V2 A
3RU6116-0CB1 — Connection & Mounting
ParameterValue
Mounting / fastening methodstand-alone installation
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)
Conductor range (AWG), main contacts2x (20 ... 16), 2x (20 ... 18), 2x 12
Conductor range (AWG), auxiliary contacts2x (20 ... 16), 2x (18 ... 14)
3RU6116-0CB1 — Environmental
ParameterValue
Operating temperature-40 ... +70 °C
Transport temperature-55 ... +80 °C
Relative humidity, operating0 ... 90 %
Max. installation altitude2 000 m
3RU6116-0CB1 — Mechanical
ParameterValue
Width45 mm
Height89 mm
Depth80 mm

Product details

Part identity and setting range

The Siemens SIRIUS 3RU6116-0CB1 is a thermal overload relay for motor protection, covering the 0.18–0.25 A adjustable current range. It is a size S00 device designed for stand-alone installation. The trip class is CLASS 10. The relay uses a thermal bimetallic release and is rated for 690 V operating voltage at 50/60 Hz. The insulation voltage at pollution degree 3 is also 690 V. Surge voltage withstand is 6 kV.

RoHS compliance is indicated by a substance prohibitance date of 05/01/2012. The relay carries Siemens SIRIUS branding.

Physical integration and wiring

Dimensions are 89 mm high, 45 mm wide, and 80 mm deep. Required spacing to grounded parts at the side is 6 mm. Mounting position is any. Main circuit and auxiliary/control circuit both use screw-type terminals. Main contacts accept 2x (0.5–1.5 mm²) solid/stranded or 2x (0.75–2.5 mm²), with AWG equivalents 2x (20–16) and 2x (20–18) plus 2x 12. Auxiliary contacts accept 2x (20–16) and 2x (18–14) AWG. Tightening torque for main contacts is 0.8–1.2 N·m. Finely stranded with core end processing is also supported: 2x (0.5–1.5 mm²) and 2x (0.75–2.5 mm²).

Environmental and mechanical withstand

Relative humidity during operation is 0–90 %. Shock resistance per IEC 60068-2-27 is 8g / 11 ms. Installation altitude maximum is 2 000 m above sea level.

Frequently asked questions

What is the closest functional second-source to 3RU6116-0CB1?

The 3RU2116-1FC1 is a size S00 thermal overload relay from the same SIRIUS family, but it covers a different current range (typically higher) and uses a different contactor interface (direct mounting on S00 contactors). The 3RU6116-0CB1 is a stand-alone installation variant — it does not snap onto a contactor. They are not drop-in interchangeable without rewiring the mounting and wiring scheme.

What is the depth of 3RU6116-0CB1?

The depth is 80 mm. Combined with the 45 mm width and 89 mm height, the relay occupies a standard two-module footprint on a DIN rail.

Will 3RU6116-0CB1 drop into a panel specified around 3RU2116-1FC1 without rewiring?

No. The 3RU6116-0CB1 is a stand-alone installation relay with its own mounting and wiring, while the 3RU2116-1FC1 is designed for direct mounting on a contactor. The terminal arrangements and physical footprint differ. Rewiring and re-mounting would be required.

MPN
3RU6116-0CB1