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Siemens Overload Relay: Electronic Protection, 3 Poles, 1NO/1NC - IEC Electronic Overload Relays
SiemensIEC Electronic Overload Relays

Siemens Overload Relay: Electronic Protection, 3 Poles, 1NO/1NC

The SIEMENS Overload Relay is an IEC electronic overload relay with three poles and a frame size of S00. It features a 1NO/1NC auxiliary contact form, a maximum voltage rating of 690V AC, and screw terminals. This…

SKU 3G-OTH-44331

Brand
Siemens
Item
Overload Relay: Electronic Protection, 3 Poles, 1NO/1NC
Category
IEC Electronic Overload Relays
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Technical Specifications

Siemens
Manufacturer Part Number
3RB31134RB0
Frame Size
S00
Compatible Contactors
Frame Size S00
Auxiliary Contact Form
1NO/1NC
Maximum Voltage Rating
690V AC
Phase Loss Sensitivity
No
Thermal Units Required
Not Applicable to Electronic Type Overload Relays
Terminal Connection Type
Screw Terminals
Compatible Contactor Series
SIRIUS
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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SIEMENS Overload Relay is an IEC electronic overload relay with three poles and a frame size of S00. It features a 1NO/1NC auxiliary contact form, a maximum voltage rating of 690V AC, and screw terminals. This relay is compatible with SIRIUS contactors of frame size S00 and does not require thermal units.

Frequently Asked Questions

What is the SIEMENS 3RB31134RB0 overload relay used for?

The SIEMENS 3RB31134RB0 is an IEC electronic overload relay used to protect motors from overload, phase loss, and other current-related faults. It is designed for use with SIRIUS contactors of frame size S00 in industrial automation and motor control applications.

What are the specifications of the SIEMENS 3RB31134RB0 overload relay?

The SIEMENS 3RB31134RB0 is a 3-pole electronic overload relay with frame size S00, 1NO/1NC auxiliary contacts, screw terminals, and a maximum voltage rating of 690V AC. It is compatible with SIRIUS contactors of frame size S00 and does not require thermal units.

Where to buy the SIEMENS 3RB31134RB0 overload relay worldwide?

You can source the SIEMENS 3RB31134RB0 overload relay through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time.

How to select the correct overload relay for a SIRIUS contactor?

To select the correct overload relay for a SIRIUS contactor, match the frame size of the relay to the contactor frame size. The SIEMENS 3RB31134RB0 is designed for frame size S00 contactors. Ensure the relay's current range and voltage rating meet your motor's specifications.

Used in

Common applications for Siemens
District cooling plants — LME73 + RWF55 for condenser-water modulation
Inflight catering and food-processing steam boilers — LMG22 with SQN90 air-fuel cross-damper
Hospital steam-plant redundancy — LME41 with QRA2 UV flame detection for dual-fuel boilers
Semiconductor fab process heat — LME23 and SKP55 gas valves on hot-oil heater skids
Container-terminal reefer-deck heating — LMG22 retrofit onto legacy burner racks

Siemens Products

3G Electric supplies Siemens iec electronic overload relays. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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SIEMENS Overload Relay: Electronic Protection, 3 Poles, 1NO/1NC, Frame Size S00, 1 A – 4 A (MPN 3RB31134PB0). Key specifications — Brand: SIEMENS; Auxiliary Contact Form: 1NO/1NC; Compatible Contactor Series: SIRIUS; Terminal Connection Type: Screw Terminals; Frame Size: S00; Maximum Voltage Rating: 690V AC; Phase Loss Sensitivity: No; Thermal Units Required: Not Applicable to Electronic Type Overload Relays.
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SIEMENS Overload Relay: Electronic Protection, 3 Poles, 1NO/1NC, Frame Size S00, 3 A – 12 A (MPN 3RB31134SB0). Key specifications — Brand: SIEMENS; Auxiliary Contact Form: 1NO/1NC; Compatible Contactor Series: SIRIUS; Terminal Connection Type: Screw Terminals; Frame Size: S00; Maximum Voltage Rating: 690V AC; Phase Loss Sensitivity: No; Thermal Units Required: Not Applicable to Electronic Type Overload Relays.
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SIEMENS Overload Relay: Electronic Protection, 3 Poles, 1NO/1NC, Frame Size S00, 3 A – 12 A (MPN 3RB31134SB0). Key specifications — Brand: SIEMENS; Auxiliary Contact Form: 1NO/1NC; Compatible Contactor Series: SIRIUS; Terminal Connection Type: Screw Terminals; Frame Size: S00; Maximum Voltage Rating: 690V AC; Phase Loss Sensitivity: No; Thermal Units Required: Not Applicable to Electronic Type Overload Relays.
SIEMENS Overload Relay: Electronic Protection, 3 Poles, 1NO/1NC, Frame Size S00, 4 A – 16 A (MPN 3RB31134TB0). Key specifications — Brand: SIEMENS; Auxiliary Contact Form: 1NO/1NC; Compatible Contactor Series: SIRIUS; Terminal Connection Type: Screw Terminals; Frame Size: S00; Maximum Voltage Rating: 690V AC; Phase Loss Sensitivity: No; Thermal Units Required: Not Applicable to Electronic Type Overload Relays.
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SIEMENS Overload Relay: Electronic Protection, 3 Poles, 1NO/1NC, Frame Size S00, 4 A – 16 A (MPN 3RB31134TB0). Key specifications — Brand: SIEMENS; Auxiliary Contact Form: 1NO/1NC; Compatible Contactor Series: SIRIUS; Terminal Connection Type: Screw Terminals; Frame Size: S00; Maximum Voltage Rating: 690V AC; Phase Loss Sensitivity: No; Thermal Units Required: Not Applicable to Electronic Type Overload Relays.
SIEMENS Overload Relay: Electronic Protection, 3 Poles, 1NO/1NC, Frame Size S0 (MPN 3RB31234NB0). Key specifications — Brand: SIEMENS; Auxiliary Contact Form: 1NO/1NC; Compatible Contactor Series: SIRIUS; Terminal Connection Type: Screw Terminals; Frame Size: S0; Maximum Voltage Rating: 690V AC; Phase Loss Sensitivity: No; Thermal Units Required: Not Applicable to Electronic Type Overload Relays.
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SIEMENS Overload Relay: Electronic Protection, 3 Poles, 1NO/1NC, Frame Size S0 (MPN 3RB31234NB0). Key specifications — Brand: SIEMENS; Auxiliary Contact Form: 1NO/1NC; Compatible Contactor Series: SIRIUS; Terminal Connection Type: Screw Terminals; Frame Size: S0; Maximum Voltage Rating: 690V AC; Phase Loss Sensitivity: No; Thermal Units Required: Not Applicable to Electronic Type Overload Relays.
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SIEMENS Overload Relay: Electronic Protection, 3 Poles, 1NO/1NC, Frame Size S6 (MPN 3RB21534FC2). Key specifications — Brand: SIEMENS; Auxiliary Contact Form: 1NO/1NC; Compatible Contactor Series: SIRIUS; Terminal Connection Type: Screw Terminals; Frame Size: S6; Maximum Voltage Rating: 1000V AC; Phase Loss Sensitivity: No; Thermal Units Required: Not Applicable to Electronic Type Overload Relays.
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SIEMENS Overload Relay: Electronic Protection, 3 Poles, 1NO/1NC, Frame Size S00, 0.32 A – 1.25 A (MPN 3RB31134NB0). Key specifications — Brand: SIEMENS; Auxiliary Contact Form: 1NO/1NC; Compatible Contactor Series: SIRIUS; Terminal Connection Type: Screw Terminals; Frame Size: S00; Maximum Voltage Rating: 690V AC; Phase Loss Sensitivity: No; Thermal Units Required: Not Applicable to Electronic Type Overload Relays.
SIEMENS Overload Relay: Electronic Protection, 2 Poles, 1NO/1NC, Frame Size A1 (MPN 3UB88234DW2). Key specifications — Brand: SIEMENS; Auxiliary Contact Form: 1NO/1NC; Compatible Contactor Series: Class 48 Overload Relays; Terminal Connection Type: Screw Terminals; Frame Size: A1; Maximum Voltage Rating: 690V AC; Thermal Units Required: Not Applicable to Electronic Type Overload Relays; Compatible Contactors: Frame Size A1.
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SIEMENS Overload Relay: Electronic Protection, 2 Poles, 1NO/1NC, Frame Size A1 (MPN 3UB88234DW2). Key specifications — Brand: SIEMENS; Auxiliary Contact Form: 1NO/1NC; Compatible Contactor Series: Class 48 Overload Relays; Terminal Connection Type: Screw Terminals; Frame Size: A1; Maximum Voltage Rating: 690V AC; Thermal Units Required: Not Applicable to Electronic Type Overload Relays; Compatible Contactors: Frame Size A1.
SIEMENS Overload Relay: Electronic Protection, 2 Poles, 1NO/1NC, Frame Size A, 0.25 A – 1 A (MPN 3UB88134AB2). Key specifications — Brand: SIEMENS; Auxiliary Contact Form: 1NO/1NC; Compatible Contactor Series: Class 48 Overload Relays; Terminal Connection Type: Screw Terminals; Frame Size: A; Maximum Voltage Rating: 690V AC; Thermal Units Required: Not Applicable to Electronic Type Overload Relays; Compatible Contactors: Frame Size A.
Siemens
SIEMENS Overload Relay: Electronic Protection, 2 Poles, 1NO/1NC, Frame Size A, 0.25 A – 1 A (MPN 3UB88134AB2). Key specifications — Brand: SIEMENS; Auxiliary Contact Form: 1NO/1NC; Compatible Contactor Series: Class 48 Overload Relays; Terminal Connection Type: Screw Terminals; Frame Size: A; Maximum Voltage Rating: 690V AC; Thermal Units Required: Not Applicable to Electronic Type Overload Relays; Compatible Contactors: Frame Size A.
SIEMENS Overload Relay: Electronic Protection, 3 Poles, 1NO/1NC, Frame Size S0, 6 A – 25 A (MPN 3RB31234QB0). Key specifications — Brand: SIEMENS; Auxiliary Contact Form: 1NO/1NC; Compatible Contactor Series: SIRIUS; Terminal Connection Type: Screw Terminals; Frame Size: S0; Maximum Voltage Rating: 690V AC; Phase Loss Sensitivity: No; Thermal Units Required: Not Applicable to Electronic Type Overload Relays.
Siemens
SIEMENS Overload Relay: Electronic Protection, 3 Poles, 1NO/1NC, Frame Size S0, 6 A – 25 A (MPN 3RB31234QB0). Key specifications — Brand: SIEMENS; Auxiliary Contact Form: 1NO/1NC; Compatible Contactor Series: SIRIUS; Terminal Connection Type: Screw Terminals; Frame Size: S0; Maximum Voltage Rating: 690V AC; Phase Loss Sensitivity: No; Thermal Units Required: Not Applicable to Electronic Type Overload Relays.