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Siemens 3RU7116-1KB0 — Overload Relays

Siemens 3RU7116-1KB0 SIRIUS Thermal Overload Relay, Class 10

MPN3RU7116-1KB0

Siemens SIRIUS thermal overload relay, size S00, 3RU7116-1KB0, 12 A rated current, Class 10, 690 V, screw terminals.

Siemens 3RU7116-1KB0 datasheet (PDF)
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

3RU7116-1KB0 — Identification
ParameterValue
Product brand nameSIRIUS
Product designationThermal overload relay
Frame size (overload relay)S00
Combinable contactor sizesS00
3RU7116-1KB0 — Protection & Trip
ParameterValue
Overload current setting range9 ... 12 A
Trip classCLASS 10
Overload release typethermal
3RU7116-1KB0 — Electrical (main circuit)
ParameterValue
Rated operational current12 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
3RU7116-1KB0 — Auxiliary contacts
ParameterValue
Switching current at 24 V3 A
Switching current at 230 V2 A
3RU7116-1KB0 — Connection & Mounting
ParameterValue
Mounting / fastening methodContactor mounting
Mounting positionwith vertical mounting surface +/-135° rotatable, with vertical mounting surface +/- 45° tiltable to the front and back
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)
3RU7116-1KB0 — Environmental
ParameterValue
Operating temperature-20 ... +55 °C
Transport temperature-25 ... +70 °C
Relative humidity, operating0 ... 90 %
Max. installation altitude2 000 m
3RU7116-1KB0 — Mechanical
ParameterValue
Width45 mm
Height87 mm
Depth78 mm

Product details

The Siemens 3RU7116-1KB0 is a SIRIUS thermal overload relay in size S00, designed to protect three-phase AC/DC motor circuits up to 690 V at 50/60 Hz. Its 12 A rated operational current and Class 10 trip curve mean it responds fast enough to guard standard induction motors against overload without nuisance tripping on startup inrush. The relay mounts directly to a contactor of the same S00 frame — no separate DIN-rail bracket needed — and the screw-type main and auxiliary terminals accept 2x (0.75... 2.5 mm²) solid or stranded wire.

Fastening is contactor mounting — the relay clips onto the S00 contactor (e.g. 3RT1016 series) without extra hardware. The mounting position allows vertical surface installation with ±135° rotation and ±45° tilt front/back. Spacing of 6 mm to grounded parts at the side keeps heat dissipation in check. Dimensions: 45 mm wide, 87 mm high, 78 mm deep — fits standard panel layouts.

Frequently asked questions

Where can I buy 3RU7116-1KB0 and how do I get a price?

The 3RU7116-1KB0 is sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time.

When sourcing 3RU7116-1KB0, what's the closest functional second-source — 3RU2116-1FC1?

The 3RU2116-1FC1 is a similar SIRIUS thermal overload relay in size S00, but it uses a different current setting range and trip class. The 3RU7116-1KB0 is rated 12 A, Class 10; the 3RU2116-1FC1 covers a different current band. They share the same S00 contactor footprint, so panel rewiring is not needed if the current setting matches the motor FLA.

Will 3RU7116-1KB0 drop into a panel that was specified around 3RU2116-1FC1 without rewiring?

Yes, both relays share the same S00 frame size and contactor mounting pattern, so the 3RU7116-1KB0 fits the same mounting footprint. Verify the current setting range matches your motor FLA before swapping.

What is 3RU7116-1KB0's listed depth (78 mm) on this component line?

The 3RU7116-1KB0 has a depth of 78 mm.

What is 3RU7116-1KB0's listed width (45 mm) on this component line?

The 3RU7116-1KB0 has a width of 45 mm.

MPN
3RU7116-1KB0