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Siemens 3RU6116-0HB0 — Overload Relays

Siemens 3RU6116-0HB0 SIRIUS Thermal Overload Relay, 0.55-0.8

MPN3RU6116-0HB0

Siemens SIRIUS thermal overload relay, 3RU6116-0HB0, size S00, adjustable 0.55-0.80 A, Class 10, screw terminals, contactor mounting.

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

Specifications

3RU6116-0HB0 — Identification
ParameterValue
Product brand nameSIRIUS
Product designationThermal overload relay
Combinable contactor sizesS00
3RU6116-0HB0 — Protection & Trip
ParameterValue
Overload current setting range0.55 ... 0.8 A
Trip classCLASS 10
Overload release typethermal
3RU6116-0HB0 — Electrical (main circuit)
ParameterValue
Rated operational current0.8 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
3RU6116-0HB0 — Auxiliary contacts
ParameterValue
Switching current at 24 V2 A
Switching current at 110 V0.22 A
Switching current at 230 V2 A
3RU6116-0HB0 — 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)
3RU6116-0HB0 — Environmental
ParameterValue
Operating temperature-40 ... +70 °C
Transport temperature-55 ... +80 °C
Relative humidity, operating0 ... 90 %
Max. installation altitude2 000 m
3RU6116-0HB0 — Mechanical
ParameterValue
Width45 mm
Height76 mm
Depth70 mm

Product details

The adjustable current response range is 0.55 to 0.80 A, which sets the trip threshold for the motor full-load current — set it to match the motor nameplate, not the supply breaker.

Mounting and integration — what the footprint tells you

This relay mounts directly onto a contactor of the same S00 frame size — no DIN rail required, no extra bracket. The 45 mm width and 76 mm height match the S00 contactor footprint, so the assembly stays within a single modular width in the panel. Fastening method is contactor mounting, meaning it clips onto the contactor's base; verify the contactor model supports S00 add-ons before committing the BOM line. Screw-type terminals on both main and auxiliary circuits accept 2× (0.5 to 1.5 mm²) solid or 2× (0.75 to 2.5 mm²) stranded, with AWG equivalents of 2× (20 to 16) for mains and 2× (20 to 16) for aux. Tightening torque for main contacts is 0.8 to 1.2 N·m — use a torque screwdriver; overtightening can strip the terminal on the S00 body. Required spacing to grounded parts at the side is 6 mm — tight, but check that clearance if the relay sits next to a grounded busbar or enclosure wall.

Relative humidity during operation is 0 to 90 %. Installation altitude is limited to 2,000 m above sea level — above that, derate the current rating per IEC 60947. The relay carries a substance prohibitance date of 05/01/2012, indicating RoHS compliance from that date forward. Surge voltage resistance is rated at 6 kV, and insulation voltage at AC is 690 V with pollution degree 3. Shock resistance per IEC 60068-2-27 is 8g for 11 ms — adequate for most industrial panel environments but not for high-vibration applications like direct engine mounting.

Frequently asked questions

What contactor does this relay mount onto?

It mounts onto any Siemens SIRIUS contactor in size S00. The 45 mm width and 76 mm height match the S00 contactor footprint. Verify the contactor model supports S00 add-on overload relays before ordering.

What is the adjustable current range?

The adjustable current response value is 0.55 to 0.80 A. Set it to the motor's full-load amperage using the dial on the front of the relay.

What does Class 10 trip mean?

Class 10 means the relay will trip within 10 seconds at 7.2 times the set current. This is the standard trip class for standard induction motor protection — fast enough to catch a locked rotor without tripping on normal startup inrush.

What wire sizes does the screw terminal accept?

Main circuit terminals accept 2× (0.5 to 1.5 mm²) solid or 2× (0.75 to 2.5 mm²) stranded, with AWG equivalents of 2× (20 to 16). Auxiliary circuit terminals accept 2× (20 to 16) AWG. Tightening torque is 0.8 to 1.2 N·m.

MPN
3RU6116-0HB0