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Siemens 3RU6116-1CB0 — Overload Relays

Siemens 3RU6116-1CB0 SIRIUS Overload Relay, 1.8-2.5 A, Class

MPN3RU6116-1CB0

Siemens SIRIUS thermal overload relay, 3RU6116-1CB0, adjustable 1.8...2.5 A, Trip Class 10, size S00, screw-type terminals for main and auxiliary circuits.

Siemens 3RU6116-1CB0 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RU6116-1CB0 — Identification
ParameterValue
Product brand nameSIRIUS
Product designationThermal overload relay
Combinable contactor sizesS00
3RU6116-1CB0 — Protection & Trip
ParameterValue
Overload current setting range1.8 ... 2.5 A
Trip classCLASS 10
Overload release typethermal
3RU6116-1CB0 — Electrical (main circuit)
ParameterValue
Rated operational current2.5 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)5.7 W
Per pole1.9 W
3RU6116-1CB0 — Auxiliary contacts
ParameterValue
Switching current at 24 V2 A
Switching current at 110 V0.22 A
Switching current at 230 V2 A
3RU6116-1CB0 — 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)
Conductor range (AWG), main contacts2x (20 ... 16), 2x (20 ... 18), 2x 12
Conductor range (AWG), auxiliary contacts2x (20 ... 16), 2x (18 ... 14)
3RU6116-1CB0 — Environmental
ParameterValue
Operating temperature-40 ... +70 °C
Transport temperature-55 ... +80 °C
Relative humidity, operating0 ... 90 %
Max. installation altitude2 000 m
3RU6116-1CB0 — Mechanical
ParameterValue
Width45 mm
Height76 mm
Depth70 mm

Product details

Fastens directly to a S00-frame contactor via the contactor-mounting method — no bracket or adapter. Mounting position is any orientation, so it fits horizontal, vertical, or flat layouts. Main circuit terminals are screw-type, top and bottom, accepting 2× (0.5...1.5 mm²) solid/stranded or 2× (0.75...2.5 mm²). Auxiliary circuit terminals are also screw-type. Tightening torque for main contacts: 0.8...1.2 N·m. The relay requires 6 mm side spacing to grounded parts. Storage/transport range extends to -55...+80 °C. Installation altitude limit is 2 000 m above sea level. Shock resistance is 8g / 11 ms per IEC 60068-2-27.

Per-pole dissipation is 1.9 W. These numbers matter for enclosure thermal calculations — a sealed cabinet with several relays needs the heat accounted for.

Frequently asked questions

How do I get current pricing and availability for 3RU6116-1CB0?

Submit an RFQ through this listing. Availability and current pricing are confirmed at quote time through independent distribution channels.

What is the adjustable current range and trip class of 3RU6116-1CB0?

The adjustable current response value is 1.8...2.5 A, and the trip class is CLASS 10 — meaning it will trip within 10 seconds at 7.2× the set current, suitable for standard motor starting.

What compliance documentation does Siemens provide for 3RU6116-1CB0?

The relay carries RoHS compliance with a substance prohibition date of May 1, 2012. The SIRIUS series typically supports CE, UL, and CSA certifications, though specific marks should be verified against the unit's label.

MPN
3RU6116-1CB0