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Siemens Overload Relay: Electronic Protection, 3 Poles, 1NO/1NC, Frame Size S00 - IEC Electronic Overload Relays
SiemensIEC Electronic Overload Relays

Siemens Overload Relay: Electronic Protection, 3 Poles, 1NO/1NC, Frame Size S00

The SIEMENS Overload Relay: Electronic Protection is an IEC electronic overload relay from the SIRIUS series, designed for frame size S00 and compatible with S00 contactors. It features a 1NO/1NC auxiliary contact…

SKU 3G-OTH-44604

Brand
Siemens
Item
Overload Relay: Electronic Protection, 3 Poles, 1NO/1NC, Frame Size S00
Category
IEC Electronic Overload Relays
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

Siemens
Manufacturer Part Number
3RB31134SB0
Type
1NO/1NC, Frame Size S00, 3 A – 12 A
Poles
3
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

Technical Documents

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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SIEMENS Overload Relay: Electronic Protection is an IEC electronic overload relay from the SIRIUS series, designed for frame size S00 and compatible with S00 contactors. It features a 1NO/1NC auxiliary contact form, screw terminals, and a maximum voltage rating of 690V AC. This 3-pole relay covers a current range of 3 A to 12 A and does not require thermal units, as it is an electronic type.

Frequently Asked Questions

What is the SIEMENS 3RB31134SB0 overload relay used for?

The SIEMENS 3RB31134SB0 is an IEC electronic overload relay from the SIRIUS series, used to protect motors from overload and phase loss in industrial control panels. It is designed for frame size S00 contactors and is suitable for applications requiring adjustable current protection from 3 A to 12 A.

What are the specifications of the SIEMENS 3RB31134SB0 overload relay?

The SIEMENS 3RB31134SB0 is a 3-pole electronic overload relay with a 1NO/1NC auxiliary contact form, screw terminals, and a maximum voltage rating of 690V AC. It covers a current range of 3 A to 12 A, does not require thermal units, and is compatible with SIRIUS S00 contactors.

Where to buy the SIEMENS 3RB31134SB0 overload relay worldwide?

You can source the SIEMENS 3RB31134SB0 overload relay worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to select the correct SIEMENS overload relay for a motor?

To select the correct SIEMENS overload relay, match the relay's current range to the motor's full-load current. For the 3RB31134SB0, the adjustable range is 3 A to 12 A. Ensure the relay's frame size (S00) matches your contactor and that the auxiliary contacts (1NO/1NC) meet your control circuit needs.

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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Cross-referenced by specification & description
SIEMENS Overload Relay: Electronic Protection, 3 Poles, 1NO/1NC, Frame Size S00, 1 A – 4 A (MPN 3RB31134PB0)
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SIEMENS Overload Relay: Electronic Protection, 3 Poles, 1NO/1NC, Frame Size S00 (MPN 3RB31134RB0)
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SIEMENS Overload Relay: Electronic Protection, 3 Poles, 1NO/1NC, Frame Size S0, 3 A – 12 A (MPN 3RB31234SB0)
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SIEMENS Overload Relay: Electronic Protection, 3 Poles, 1NO/1NC, Frame Size S0, 0.1 A – 0.4 A (MPN 3RB31234RB0)
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SIEMENS Overload Relay: Electronic Protection, 3 Poles, 1NO/1NC, Frame Size S0, 0.1 A – 0.4 A (MPN 3RB31234RB0)

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