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Siemens 3RB3046-1XX1 — Overload Relays

Siemens 3RB3046-1XX1 SIRIUS solid-state overload relay, S3,

MPN3RB3046-1XX1
Active

Siemens SIRIUS solid-state overload relay, size S3, 3RB3046-1XX1, rated thermal current 115 A, Trip Class 10E, 50-60 Hz.

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

Specifications

3RB3046-1XX1 — Identification
ParameterValue
Product brand nameSIRIUS
Product designationsolid-state overload relay
Frame size (overload relay)S3
Combinable contactor sizesS3
Reference code (IEC 81346-2)F
3RB3046-1XX1 — Protection & Trip
ParameterValue
Overload current setting range32 ... 115 A
Trip classCLASS 10E
Overload release typeelectronic
3RB3046-1XX1 — Electrical (main circuit)
ParameterValue
Rated operational current115 A
Poles (main circuit)3
Rated operating frequency50 ... 60 Hz
Rated insulation voltage (AC, pollution degree 3)1 000 V
Rated value (AC-3e), max.1 000 V
Rated surge withstand voltage8 kV
Main current circuitstraight-through transformers
Power loss at rated current (hot)0.6 W
Per pole0.2 W
3RB3046-1XX1 — Auxiliary contacts
ParameterValue
Auxiliary contacts: NO1
Auxiliary contacts: NC1
Auxiliary contacts: CO (changeover)0
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 110 V0.3 A
Switching current at 120 V4 A
Switching current at 125 V0.3 A
Switching current at 220 V0.11 A
Switching current at 230 V3 A
3RB3046-1XX1 — Connection & Mounting
ParameterValue
Mounting / fastening methodstand-alone installation
Mounting positionany
Main-circuit connector arrangementTop and bottom
Auxiliary/control circuit connection typespring-loaded terminals
Removable aux./control terminalYes
Conductor cross-section: solid2x (0.25 ... 1.5 mm²)
Conductor cross-section: solid or stranded2x (0,25 ... 1,5 mm²)
Conductor cross-section: finely stranded with ferrule2x (0.25 ... 1.5 mm²)
3RB3046-1XX1 — Environmental
ParameterValue
Operating temperature-25 ... +60 °C
Storage temperature-40 ... +80 °C
Transport temperature-40 ... +80 °C
Relative humidity, operating10 ... 95 %
Max. installation altitude2 000 m
Shock resistance8g / 11 ms
3RB3046-1XX1 — Mechanical
ParameterValue
Width70 mm
Height106 mm
Depth124 mm

Product details

Rated thermal current (Ithe) is 115 A at both 480 V and 600 V, so this relay covers motor full-load currents up to that value in 480 V and 600 V systems. The operating frequency is 50-60 Hz, matching standard line frequencies worldwide. Stand-alone installation means it mounts independently, not ganged to a contactor — useful for retrofit or when the contactor is already in place. The auxiliary switch is integrated and provides a "tripped" message signal (Note: for message "tripped"). Contact ratings: 2 A at 24 V, 4 A at 120 V, 3 A at 230 V — sufficient to drive a PLC input or indicator lamp in the control circuit. Shock resistance is 8g / 11 ms for the signaling contact in tripped position, and 15g / 11 ms per IEC 60068-2-27 for the main body. Vibration resistance covers 1-6 Hz at 15 mm amplitude and 6-500 Hz at 20 m/s² for 10 cycles — suitable for mounting on machinery or in panels subject to moderate vibration.

This relay is sized for the S3 frame, with dimensions 70 mm wide × 106 mm high × 124 mm deep. It uses straight-through transformers for the main current circuit — the power conductors pass through the relay without looping — which simplifies wiring in a panel. Mounting position is any, giving flexibility in crowded enclosures. Wire termination accepts 2× (0.25 to 1.5 mm²) solid or stranded, with a Pozidriv PZ 2 screwdriver tip (shaft diameter 5-6 mm).

Frequently asked questions

What does the 'tripped' message signal mean?

The integrated auxiliary switch provides a dedicated 'tripped' signal contact. When the overload relay trips, this contact changes state, giving a discrete indication to a PLC or annunciator that the relay has operated. Contact ratings are 2 A at 24 V, 4 A at 120 V, and 3 A at 230 V.

What are the key electrical ratings for this overload relay?

Rated thermal current is 115 A at both 480 V and 600 V. Trip Class is 10E. Operating frequency is 50-60 Hz. The electronic overload release provides accurate protection without thermal drift.

What compliance documentation is available for this part?

The evidence includes a substance prohibitance date of 03/01/2017, indicating RoHS compliance. As a Siemens SIRUS product, it carries CE marking and is designed to IEC standards for overload relays. Specific UL/CSA listing details should be confirmed from the full datasheet.

MPN
3RB3046-1XX1