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SIEMENS 3RB31334WB0 IEC Electronic Overload Relay - IEC Electronic Overload Relays
SiemensIEC Electronic Overload Relays

SIEMENS 3RB31334WB0 IEC Electronic Overload Relay

The SIEMENS Overload Relay is an IEC electronic overload relay with 3 poles and a 1NO/1NC auxiliary contact form, designed for Frame Size S2. It features a maximum voltage rating of 690V AC, screw terminals, and is…

SKU 3G-OTH-44975

Brand
Siemens
Item
3RB31334WB0 IEC Electronic Overload Relay
Part Number
3RB31334WB0
Category
IEC Electronic Overload Relays
Available to Order
Also known as:3RB31334WB0Siemens
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Technical Specifications

Siemens
Manufacturer Part Number
3RB31334WB0
Frame Size
S2
Compatible Contactors
Frame Size S2
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 3 poles and a 1NO/1NC auxiliary contact form, designed for Frame Size S2. It features a maximum voltage rating of 690V AC, screw terminals, and is compatible with SIRIUS contactors of the same frame size. This electronic type does not require thermal units and has no phase loss sensitivity.

Frequently Asked Questions

What is the SIEMENS 3RB31334WB0 overload relay used for?

The SIEMENS 3RB31334WB0 is an IEC electronic overload relay used to protect motors from overcurrent and phase imbalance. It is designed for industrial applications requiring reliable motor protection, compatible with SIRIUS contactors in Frame Size S2, and operates at up to 690V AC.

What are the specifications of the SIEMENS 3RB31334WB0 overload relay?

The SIEMENS 3RB31334WB0 is a 3-pole electronic overload relay with a 1NO/1NC auxiliary contact form, Frame Size S2, and screw terminals. It has a maximum voltage rating of 690V AC, no phase loss sensitivity, and does not require thermal units. It is compatible with SIRIUS contactors of the same frame size.

Where to buy the SIEMENS 3RB31334WB0 overload relay worldwide?

You can source the SIEMENS 3RB31334WB0 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 install the SIEMENS 3RB31334WB0 overload relay?

To install the SIEMENS 3RB31334WB0, mount it directly onto a compatible SIRIUS contactor of Frame Size S2. Connect the screw terminals per the wiring diagram, ensuring the supply voltage does not exceed 690V AC. No thermal units are needed. Always follow local electrical codes and the manufacturer's manual.

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
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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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