Skip to main content
Siemens 3RU1116-0BB1 — Overload Relays

Siemens 3RU1116-0BB1 SIRIUS Thermal Overload Relay, CLASS 10

MPN3RU1116-0BB1

Siemens SIRIUS thermal overload relay, 3RU1116-0BB1, CLASS 10, size S00, 3-pole, screw-type terminals, IP20 front, ATEX certified.

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

Specifications

3RU1116-0BB1 — Identification
ParameterValue
Product brand nameSIRIUS
Product designationthermal overload relay
Frame size (overload relay)S00
Combinable contactor sizesS00
Reference code (IEC 81346-2)F
3RU1116-0BB1 — Protection & Trip
ParameterValue
Overload current setting range0.14 ... 0.2 A
Trip classCLASS 10
3RU1116-0BB1 — Electrical (main circuit)
ParameterValue
Poles (main circuit)3
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
3RU1116-0BB1 — Auxiliary contacts
ParameterValue
Auxiliary contacts: NO1
Auxiliary contacts: NC1
Auxiliary contacts: CO (changeover)0
Auxiliary switch short-circuit protection (required fuse)fuse gL/gG: 6 A, quick: 10 A
Switching current at 24 V1 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
3RU1116-0BB1 — Connection & Mounting
ParameterValue
Mounting / fastening methodstand-alone installation
Mounting positionwith vertical mounting surface +/-135° rotatable, with vertical mounting surface +/- 45° tiltable to the front and back
Auxiliary/control circuit connection typescrew-type terminals
Removable aux./control terminalNo
Conductor cross-section: solid2x (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 contacts1x (20 ... 16), 1x (18 ... 14), 1x 12
Conductor range (AWG), auxiliary contacts2x (20 ... 16), 2x (18 ... 14)
3RU1116-0BB1 — Environmental
ParameterValue
Operating temperature-20 ... +70 °C
Storage temperature-55 ... +80 °C
Transport temperature-55 ... +80 °C
Relative humidity, operating100 %
Max. installation altitude2 000 m
Shock resistance8g / 10 ms
3RU1116-0BB1 — Mechanical
ParameterValue
Width45 mm
Height87 mm
Depth78 mm
3RU1116-0BB1 — Specifications
ParameterValue
Type Of ProtectionDMT 98 ATEX G 001

Product details

It protects three-phase motor circuits against overload and phase failure, and its 3-pole main current circuit with screw-type terminals is sized for panel integration on a DIN rail or stand-alone mounting. CLASS 10 trip characteristic. The S00 frame keeps the footprint compact: 45 mm wide, 87 mm tall, 78 mm deep, with zero clearance required upwards, forwards, backwards, and downwards, and only 6 mm to the side — so it packs tight against adjacent devices in a crowded panel.

The auxiliary contact block switches 1 A at 24 V, 3 A at 120 V, 2 A at 230 V, and 1 A at 400 V — these are the rated thermal currents for the N/O and N/C contacts. For a 24 VDC PLC input, the 1 A rating is more than adequate; at 120 VAC control circuits the 3 A rating covers most contactor coils and pilot lights without an interposing relay. Power dissipation is 1.6 W per pole, totaling 4.8 W across all three poles at rated current. That's low enough to skip forced ventilation in most enclosures, but if the relay is stacked between other heat sources in a sealed box, check the internal temperature rise against the -20 to +70 °C operating range. The relay accepts solid and finely stranded conductors: 2× (0.5…1.5 mm²) or 2× (0.75…2.5 mm²) per terminal, with ferruled ends supported. For the main circuit, AWG 20–14 (single) and AWG 12 are listed. This covers standard motor leads and control wiring up to 2.5 mm² without needing adapter lugs. IP20 front protection is finger-safe when installed in a closed enclosure.

Deployment context

Mount on a vertical surface; rotate ±135° or tilt ±45° forward/backward. Stand-alone installation is the default fastening method. Shock resistance is 8g for 10 ms, so it holds calibration on a machine tool or conveyor line with moderate vibration. The -20 to +70 °C operating range and 100 % relative humidity (condensing) cover unheated plant floors and washdown zones as long as the IP20 front is inside a sealed cabinet. The ATEX certification (DMT 98 ATEX G 001) means the relay can be used in potentially explosive gas atmospheres when installed in an appropriate enclosure — relevant for chemical, oil & gas, or grain-handling applications where motor protection must not become an ignition source.

RoHS compliance date is 07/01/2006, meaning the design meets the EU RoHS directive since that date. No separate UL or CSA listing appears in the evidence, but the ATEX certification and IEC reference code (F per IEC 81346-2) indicate it is designed for international use.

Frequently asked questions

What is the depth of 3RU1116-0BB1?

The depth is 78 mm, with zero clearance required behind the relay for ventilation or wiring access.

What wire sizes does 3RU1116-0BB1 accept?

Solid and finely stranded conductors: 2x (0.5…1.5 mm²) or 2x (0.75…2.5 mm²) per terminal. Main circuit also accepts AWG 20–14 single and AWG 12.

MPN
3RU1116-0BB1