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Siemens 3UB81134BB2 IEC Electronic Overload Relay - IEC Electronic Overload Relays
SiemensIEC Electronic Overload Relays

Siemens 3UB81134BB2 IEC Electronic Overload Relay

The SIEMENS Overload Relay: Electronic Protection (MPN 3UB81134BB2) is an IEC electronic overload relay with three poles, a Frame Size A, and a current range of 0.75 A – 3.4 A. It features a 1NO/1NC auxiliary contact…

SKU 3G-OTH-45194

Brand
Siemens
Item
3UB81134BB2 IEC Electronic Overload Relay
Part Number
3UB81134BB2
Category
IEC Electronic Overload Relays
Available to Order
Also known as:3UB81134BB2Siemens
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Technical specs
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

Siemens
Manufacturer Part Number
3UB81134BB2
Type
1NO/1NC, Frame Size A, 0.75 A – 3.4 A
Poles
3
UNSPSC
39121520
Standards
REACH Art 33 Duty to Inform According to the Current List of Candidates Lead CAS-No. 7439-92-1 > 0, 1 % (w/w); RoHS
Body Width
3.15
Mfr. Model
3UB81134BB2
Trip Class
5/10/20/30
Body Height
2.6
Thu. Aug 06
.
Number of Poles
3
Auxiliary Contact Form
1NO/1NC
Maximum Voltage Rating
690V
Terminal Connection Type
Screw Terminals
Auxiliary Contacts Included
1NO/1NC
Maximum Overload Relay Current Setting
3.4
Minimum Overload Relay Current Setting
0.75

Technical Documents

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

Product Description

The SIEMENS Overload Relay: Electronic Protection (MPN 3UB81134BB2) is an IEC electronic overload relay with three poles, a Frame Size A, and a current range of 0.75 A – 3.4 A. It features a 1NO/1NC auxiliary contact form, screw terminals, and a maximum voltage rating of 690V AC. This relay is compatible with Frame Size A contactors and Class 48 Overload Relays, and thermal units are not applicable to this electronic type.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the SIEMENS 3UB81134BB2 overload relay used for?

The SIEMENS 3UB81134BB2 is an IEC electronic overload relay used to protect motors from overload and phase loss. It is suitable for industrial applications requiring three-pole protection with a current range of 0.75 A – 3.4 A and a maximum voltage rating of 690V AC.

What are the specifications of the SIEMENS 3UB81134BB2 overload relay?

The SIEMENS 3UB81134BB2 is an electronic overload relay with 3 poles, Frame Size A, and a current range of 0.75 A – 3.4 A. It has a 1NO/1NC auxiliary contact form, screw terminals, and a maximum voltage rating of 690V AC. It is compatible with Frame Size A contactors and Class 48 Overload Relays.

Where to buy the SIEMENS 3UB81134BB2 overload relay worldwide?

You can source the SIEMENS 3UB81134BB2 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 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 3UB81134BB2, the range is 0.75 A – 3.4 A. Ensure the frame size (A) and voltage rating (690V AC) are compatible with your contactor and system. Consult the motor nameplate for precise settings.

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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