Siemens 3RU2116-4AB1 SIRIUS Thermal Overload Relay, Class 10

Name: 3RU2116-4AB1
Brand: Siemens
SKU: 3RU2116-4AB1
Availability: LimitedAvailability
Author: Liquidation Lev

Specifications

Identification

3RU2116-4AB1 — Identification
Parameter	Value
Product brand name	SIRIUS
Product designation	thermal overload relay
Frame size (overload relay)	S00
Combinable contactor sizes	S00
Reference code (IEC 81346-2)	F

Protection & Trip

3RU2116-4AB1 — Protection & Trip
Parameter	Value
Overload current setting range	11 ... 16 A
Trip class	CLASS 10
Overload release type	thermal

Electrical (main circuit)

3RU2116-4AB1 — Electrical (main circuit)
Parameter	Value
Rated operational current	16 A
Poles (main circuit)	3
Rated operating frequency	50 ... 60 Hz
Rated insulation voltage (AC, pollution degree 3)	690 V
Rated value (AC-3e), max.	690 V
Rated surge withstand voltage	6 kV
Main current circuit	screw-type terminals
Power loss at rated current (hot)	8.1 W
Per pole	2.7 W

Auxiliary contacts

3RU2116-4AB1 — Auxiliary contacts
Parameter	Value
Auxiliary contacts: NO	1
Auxiliary contacts: NC	1
Auxiliary contacts: CO (changeover)	0
Auxiliary switch short-circuit protection (required fuse)	fuse gG: 6 A, quick: 10 A
Switching current at 24 V	2 A
Switching current at 60 V	0.3 A
Switching current at 110 V	0.22 A
Switching current at 120 V	3 A
Switching current at 125 V	0.22 A
Switching current at 220 V	0.11 A
Switching current at 230 V	2 A
Switching current at 400 V	1 A

Connection & Mounting

3RU2116-4AB1 — Connection & Mounting
Parameter	Value
Mounting / fastening method	stand-alone installation
Mounting position	any
Main-circuit connector arrangement	Top and bottom
Auxiliary/control circuit connection type	screw-type terminals
Removable aux./control terminal	No
Conductor cross-section: solid or stranded	2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Conductor cross-section: finely stranded with ferrule	2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Conductor range (AWG), auxiliary contacts	2x (20 ... 16), 2x (18 ... 14)

Environmental

3RU2116-4AB1 — Environmental
Parameter	Value
Operating temperature	-40 ... +70 °C
Storage temperature	-55 ... +80 °C
Transport temperature	-55 ... +80 °C
Relative humidity, operating	10 ... 95 %
Max. installation altitude	2 000 m

Mechanical

3RU2116-4AB1 — Mechanical
Parameter	Value
Width	45 mm
Height	89 mm
Depth	80 mm

Product details

Motor protection backbone for the SIRIUS S00 contactor family

The Siemens 3RU2116-4AB1 is a SIRIUS-branded thermal overload relay in the S00 frame size, designed to pair with S00 contactors for motor feeder protection in control panels.

Motor power ratings across common line voltages

This lets the trip signal drive a PLC input or a contactor coil directly across a range of control circuits.

Panel fit and wiring details

Dimensions are 45 mm wide, 89 mm high, and 80 mm deep — the S00 footprint fits standard 45 mm DIN-rail spacing. Terminal screws take a Pozidriv PZ2 tip with a 5–6 mm shaft diameter. The auxiliary switch is integrated into the relay body, with M3 screw terminals for the main contacts.

Frequently asked questions

What does the 'Note for message Tripped' on the 3RU2116-4AB1 mean?

The note indicates that this overload relay provides a dedicated 'Tripped' signal output — the integrated auxiliary switch changes state when the bimetal elements have reached the trip threshold. This output can be wired to a PLC input or a status lamp to indicate an overload condition on the motor feeder.

What compliance documentation does Siemens provide for the 3RU2116-4AB1?

The relay carries a substance prohibition date of 10/01/2009, indicating RoHS compliance for materials restricted under EU directives. Standard Siemens documentation includes the CE declaration of conformity and the product datasheet with IEC/EN 60947-4-1 ratings.