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Siemens 3RB2483-4AC1 — Overload Relays

Siemens 3RB2483-4AC1 3-pole overload relay, 630 A, IP20

MPN3RB2483-4AC1
NRND

Siemens 3RB2483-4AC1 overload relay, 3 poles, 630 A switching current, adjustable trip class CLASS 5/10/20/30, 24 V DC aux circuit, IP20, stand-alone installation, 15g / 11 ms shock.

$260.35Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

3RB2483-4AC1 — Identification
ParameterValue
Product brand nameSIRIUS
Product designationElectronic overload relay for IO-Link
Frame size (overload relay)S00 ... S12
Combinable contactor sizesS00 ... S12
Reference code (IEC 81346-2)F
3RB2483-4AC1 — Protection & Trip
ParameterValue
Overload current setting range0.3 ... 630 A
Trip classCLASS 5, 10, 20 and 30 adjustable
3RB2483-4AC1 — Electrical (main circuit)
ParameterValue
Rated operational current630 A
Poles (main circuit)3
Rated operating frequency50 ... 60 Hz
Rated insulation voltage (AC, pollution degree 3)300 V
Rated surge withstand voltage4 kV
Power loss at rated current (hot)0.5 W
Per pole0.17 W
3RB2483-4AC1 — Auxiliary contacts
ParameterValue
Auxiliary contacts: NO1
Auxiliary contacts: CO (changeover)1
Auxiliary switch short-circuit protection (required fuse)fuse gG: 6 A
Switching current at 24 V2 A
Switching current at 60 V0.55 A
Switching current at 125 V0.3 A
Switching current at 220 V0.2 A
Switching current at 230 V3 A
3RB2483-4AC1 — Connection & Mounting
ParameterValue
Mounting / fastening methodstand-alone installation
Mounting positionany
Auxiliary/control circuit connection typespring-loaded terminals
Removable aux./control terminalYes
Conductor cross-section: solid or stranded1x (0,25 ... 1,5 mm²), 2x (0,25 ... 1,5 mm²)
Conductor cross-section: finely stranded with ferrule1x (0.25 ... 1.5 mm²), 2x (0.25 ... 1.5 mm²)
3RB2483-4AC1 — Environmental
ParameterValue
Operating temperature-25 ... +60 °C
Storage temperature-40 ... +80 °C
Transport temperature-40 ... +80 °C
Relative humidity, operating100 %
Max. installation altitude2 000 m
3RB2483-4AC1 — Mechanical
ParameterValue
Width45 mm
Height113 mm
Depth95 mm

Product details

Overview

The Siemens 3RB2483-4AC1 is a 3-pole overload relay rated for a switching current of 630 A, with adjustable trip classes covering CLASS 5, 10, 20 and 30. It is housed in an IP20 enclosure for stand-alone installation and carries a shock rating of 15g / 11 ms.

Applications

The 3RB2483-4AC1 is suited for motor protection in industrial machinery, pumps, fans, compressors, and conveyor systems where a 3-pole, 630 A rated overload relay is required. Its compatibility with contactors of sizes S00 through S12 makes it a flexible choice for panel builders assembling motor starter combinations across a wide power range.

The relay is designed for stand-alone installation with dimensions of 45.0 mm width, 113.0 mm height, and 95.0 mm depth, weighing 450.0 g. The auxiliary circuit uses spring-loaded terminals accepting 1x (0.25... 1.5 mm²) or 2x (0.25... 1.5 mm²) finely stranded wire. Finger-safe touch protection is provided for vertical contact from the front, and the auxiliary terminal is removable for easier wiring. A fuse gG: 6 A is required for short-circuit protection of the auxiliary circuit.

MPN
3RB2483-4AC1