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Siemens 3RU2116-1KB0 — Overload Relays

Siemens 3RU2116-1KB0 SIRIUS Thermal Overload Relay, Size S00

MPN3RU2116-1KB0
Active

Siemens SIRIUS thermal overload relay, 3RU2116-1KB0, size S00, CLASS 10, 690 V rated, screw terminals, contactor mounting.

$27.94Ref. price · indicative, final on quote
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

3RU2116-1KB0 — Identification
ParameterValue
Product brand nameSIRIUS
Product designationthermal overload relay
Frame size (overload relay)S00
Combinable contactor sizesS00
Reference code (IEC 81346-2)F
3RU2116-1KB0 — Protection & Trip
ParameterValue
Overload current setting range9 ... 12.5 A
Trip classCLASS 10
Overload release typethermal
3RU2116-1KB0 — 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 value (AC-3e), max.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
3RU2116-1KB0 — Auxiliary contacts
ParameterValue
Auxiliary contacts: NO1
Auxiliary contacts: NC1
Auxiliary contacts: CO (changeover)0
Auxiliary switch short-circuit protection (required fuse)fuse gG: 6 A, quick: 10 A
Switching current at 24 V2 A
Switching current at 60 V0.3 A
Switching current at 110 V0.22 A
Switching current at 120 V3 A
Switching current at 125 V0.22 A
Switching current at 220 V0.11 A
Switching current at 230 V2 A
Switching current at 400 V1 A
3RU2116-1KB0 — Connection & Mounting
ParameterValue
Mounting / fastening methodContactor mounting
Mounting positionany
Main-circuit connector arrangementTop and bottom
Auxiliary/control circuit connection typescrew-type terminals
Removable aux./control terminalNo
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 (18 ... 14), 2x 12
Conductor range (AWG), auxiliary contacts2x (20 ... 16), 2x (18 ... 14)
3RU2116-1KB0 — Environmental
ParameterValue
Operating temperature-40 ... +70 °C
Storage temperature-55 ... +80 °C
Transport temperature-55 ... +80 °C
Relative humidity, operating10 ... 95 %
Max. installation altitude2 000 m
3RU2116-1KB0 — Mechanical
ParameterValue
Width45 mm
Height76 mm
Depth70 mm

Product details

Rated for 690 V, it handles 5.5 kW at 400 V and 7.5 kW at 500 V or 690 V. The integrated auxiliary switch provides a tripped message output — useful for signaling a fault condition back to the controller.

Size S00 means a compact footprint: 45 mm wide, 76 mm high, 70 mm deep. It fastens directly to the contactor — no separate DIN-rail bracket needed for the relay itself. Screw terminals accept 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) solid or stranded wire; use a Pozidriv PZ 2 tip with a 5–6 mm shaft diameter. Temperature compensation is active from -40 to +60 °C, so the trip curve stays accurate across a wide ambient range.

Trip Class and Ratings

CLASS 10 means the relay trips within 10 seconds at a cold start under 7.2× the current setting — standard for standard-duty induction motors that don't need a longer acceleration curve. The rated insulation voltage is 690 V, and the auxiliary contacts handle 2 A at 24 V, 3 A at 120 V, 2 A at 230 V, and 1 A at 400 V. Per-pole power dissipation is 2.2 W, which matters for thermal buildup in a dense panel.

Frequently asked questions

What is the tripped message on this relay?

The relay includes an integrated auxiliary switch that provides a tripped message — a dry contact that changes state when the overload relay has operated. This can be wired to a PLC input or indicator lamp for remote fault annunciation.

What are the key dimensions?

Width 45 mm, height 76 mm, depth 70 mm. Size S00 frame.

What compliance documentation is available?

The evidence lists a substance prohibition date of 10/01/2009, indicating RoHS compliance. The SIRIUS series typically carries UL, CSA, and CE marks, but specific approvals for this order code are not detailed in the provided data.

MPN
3RU2116-1KB0