BOM / RFQ

3RB2036-2UW1 - Siemens

MPN3RB2036-2UW1

Overload relay 12.5...50 A For motor protection Size S2, Class 20 Stand-alone installation Main circuit: straight-through transformer Auxiliary circuit: Screw terminal Manual-Automatic-Reset!!! Phased-out product!!! Successor is SIRIUS 3RB3 Preferred successor type is >>3RB3036-2UW1<<

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

Specifications

3RB2036-2UW1 — Identification
Parameter	Value
Product brand name	SIRIUS
Product designation	solid-state overload relay
Combinable contactor sizes	S2
Reference code (IEC 81346-2)	F

3RB2036-2UW1 — Protection & Trip
Parameter	Value
Overload current setting range	12.5 ... 50 A
Trip class	CLASS 20E

3RB2036-2UW1 — Electrical (main circuit)
Parameter	Value
Poles (main circuit)	3
Rated insulation voltage (AC, pollution degree 3)	690 V
Rated surge withstand voltage	6 kV
Main current circuit	straight-through transformers
Power loss at rated current (hot)	0.05 W
Per pole	0.02 W

3RB2036-2UW1 — 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 gL/gG: 6 A
Switching current at 24 V	2 A
Switching current at 60 V	0.55 A
Switching current at 110 V	0.3 A
Switching current at 120 V	4 A
Switching current at 125 V	0.3 A
Switching current at 220 V	0.11 A
Switching current at 230 V	3 A

3RB2036-2UW1 — Connection & Mounting
Parameter	Value
Mounting / fastening method	stand-alone installation
Mounting position	any
Auxiliary/control circuit connection type	screw-type terminals
Removable aux./control terminal	Yes
Conductor cross-section: solid	0.5 ... 4 mm², 2x (0.5 ... 2.5 mm²)
Conductor cross-section: finely stranded with ferrule	0.5 ... 2.5 mm², 2x (0.5 ... 1.5 mm²)
Conductor range (AWG), auxiliary contacts	2x (20 ... 14)

3RB2036-2UW1 — Environmental
Parameter	Value
Operating temperature	-25 ... +60 °C
Storage temperature	-40 ... +80 °C
Transport temperature	-40 ... +80 °C
Relative humidity, operating	100 %
Max. installation altitude	2 000 m
Shock resistance	15g / 11 ms