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3RB3046-1UW1 - Siemens

MPN3RB3046-1UW1

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Overload relay 12.5...50 A Electronic For motor protection Size S3, Class 10E Stand-alone installation Main circuit: Straight-through transformer Auxiliary circuit: Screw Manual-Automatic-Reset

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

Specifications

3RB3046-1UW1 — Identification
Parameter	Value
Product brand name	SIRIUS
Product designation	solid-state overload relay
Frame size (overload relay)	S3
Combinable contactor sizes	S3
Reference code (IEC 81346-2)	F

3RB3046-1UW1 — Protection & Trip
Parameter	Value
Overload current setting range	12.5 ... 50 A
Trip class	CLASS 10E
Overload release type	electronic

3RB3046-1UW1 — Electrical (main circuit)
Parameter	Value
Rated operational current	50 A
Poles (main circuit)	3
Rated operating frequency	50 ... 60 Hz
Rated insulation voltage (AC, pollution degree 3)	1 000 V
Rated value (AC-3e), max.	1 000 V
Rated surge withstand voltage	8 kV
Main current circuit	straight-through transformers
Power loss at rated current (hot)	0.2 W
Per pole	0.07 W

3RB3046-1UW1 — 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
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

3RB3046-1UW1 — 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	Yes
Conductor cross-section: solid	1x (0.5 ... 4 mm²), 2x (0.5 ... 2.5 mm²)
Conductor cross-section: solid or stranded	1x (0,5 ... 4 mm²), 2x (0,5 ... 2,5 mm²)
Conductor cross-section: finely stranded with ferrule	1x (0.5 ... 2.5 mm²), 2x (0.5 ... 1.5 mm²)
Conductor range (AWG), auxiliary contacts	2x (20 ... 14)

3RB3046-1UW1 — Environmental
Parameter	Value
Operating temperature	-25 ... +60 °C
Storage temperature	-40 ... +80 °C
Transport temperature	-40 ... +80 °C
Relative humidity, operating	10 ... 95 %
Max. installation altitude	2 000 m
Shock resistance	8g / 11 ms