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Siemens 3RU2116-0KB1 — Overload Relays

Siemens 3RU2116-0KB1 SIRIUS Thermal Overload Relay, CLASS 10

MPN3RU2116-0KB1
Active

Siemens SIRIUS thermal overload relay, 3RU2116-0KB1, CLASS 10, size S00, 690 V rated, stand-alone installation, screw-type terminals.

Siemens 3RU2116-0KB1 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RU2116-0KB1 — Identification
ParameterValue
Product brand nameSIRIUS
Product designationthermal overload relay
Frame size (overload relay)S00
Combinable contactor sizesS00
Reference code (IEC 81346-2)F
3RU2116-0KB1 — Protection & Trip
ParameterValue
Overload current setting range0.9 ... 1.25 A
Trip classCLASS 10
Overload release typethermal
3RU2116-0KB1 — Electrical (main circuit)
ParameterValue
Rated operational current1.25 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)5.7 W
Per pole1.9 W
3RU2116-0KB1 — 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
3RU2116-0KB1 — Connection & Mounting
ParameterValue
Mounting / fastening methodstand-alone installation
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)
3RU2116-0KB1 — 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
3RU2116-0KB1 — Mechanical
ParameterValue
Width45 mm
Height89 mm
Depth80 mm

Product details

Rated for a maximum of 690 V, with power ratings at 400 V (0.37 kW), 500 V (0.55 kW), and 690 V (0.75 kW), this relay is sized for smaller motor loads in control panels.

Designed for stand-alone installation with screw-type terminals on the main current circuit, accepting 2× (0.5…1.5 mm²) or 2× (0.75…2.5 mm²) solid or stranded wire. The auxiliary switch is integrated, and the screwdriver tip required is Pozidriv PZ 2 with a shaft diameter of 5…6 mm.

Operating temperature range is -40…+70 °C, with temperature compensation active across -40…+60 °C, and storage/transport range of -55…+80 °C. Substance prohibitance date is 10/01/2009, indicating compliance with RoHS and REACH substance restrictions from that date forward. MTTF with high demand rate is 2,280 years.

Frequently asked questions

What is 3RU2116-0KB1's listed note (for message 'Tripped') on this component line?

The note 'for message "Tripped"' indicates this relay provides a dedicated signal output when the overload has tripped, which can be wired to a PLC input or indicator lamp for remote fault annunciation.

What is 3RU2116-0KB1's listed depth (80 mm) on this component line?

The depth is 80 mm, which, combined with a width of 45 mm and height of 89 mm, gives a compact footprint that fits standard DIN-rail enclosures.

Will 3RU2116-0KB1 drop into a panel that was specified around 3RU2116-1FC1 without rewiring?

Both relays share the same SIRIUS S00 form factor and screw-type terminal layout, so the mechanical fit and wiring footprint are identical — no rewiring needed for the mounting or main circuit connections, but verify the current setting range matches the motor FLA.

What compliance documentation does this brand provide for 3RU2116-0KB1 (RoHS, REACH, UL, IEC)?

The substance prohibitance date of 10/01/2009 confirms RoHS and REACH compliance from that date; the relay is designed to IEC/EN 60947-4-1 standards for thermal overload relays, and UL/CSA listings are standard for the SIRIUS family.

MPN
3RU2116-0KB1