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Siemens Molded Case Circuit Breaker: 125 A Amps, 18kA at 480V AC, Fixed, Load Side Lug - ED-Frame Siemens Molded Case Circuit Breakers
SiemensED-Frame Siemens Molded Case Circuit Breakers

Siemens Molded Case Circuit Breaker: 125 A Amps, 18kA at 480V AC, Fixed, Load Side Lug

The SIEMENS ED-Frame Molded Case Circuit Breaker (SKU 6FND3, MPN ED43B125) is a 125 A rated device from the ED4 series. It features a fixed instantaneous trip, a maximum AIR rating of 18kA at 480V AC, and ABC phase…

SKU 3G-OTH-22127

Brand
Siemens
Item
Molded Case Circuit Breaker: 125 A Amps, 18kA at 480V AC, Fixed, Load Side Lug
Category
ED-Frame Siemens Molded Case Circuit Breakers
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Technical Specifications

Siemens
Manufacturer Part Number
ED43B125
Series
ED4
Type
18kA at 480V AC, Fixed, Load Side Lug, ABC, ED4
Max. AIR Rating
18kA at 480V AC
Phase Connection
ABC
Instantaneous Trip
Fixed
Terminal Connection
Load Side Lug
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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SIEMENS ED-Frame Molded Case Circuit Breaker (SKU 6FND3, MPN ED43B125) is a 125 A rated device from the ED4 series. It features a fixed instantaneous trip, a maximum AIR rating of 18kA at 480V AC, and ABC phase connection. The unit is equipped with load side lug terminal connections.

Frequently Asked Questions

What is the SIEMENS ED43B125 molded case circuit breaker used for?

The SIEMENS ED43B125 is a 125 A molded case circuit breaker used for overcurrent protection in industrial and commercial electrical distribution systems. It is suitable for branch circuits, feeder protection, and equipment disconnection where a fixed instantaneous trip and ABC phase connection are required.

What are the specifications of the SIEMENS ED43B125?

The SIEMENS ED43B125 is a 125 A molded case circuit breaker from the ED4 series. It has a maximum AIR rating of 18kA at 480V AC, a fixed instantaneous trip, ABC phase connection, and load side lug terminals. The MPN is ED43B125 and the SKU is 6FND3.

Where to buy the SIEMENS ED43B125 worldwide?

You can source the SIEMENS ED43B125 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 on this ED4 series circuit breaker.

How to select the correct SIEMENS ED4 circuit breaker for an application?

To select the correct SIEMENS ED4 circuit breaker, verify the continuous current rating (125 A for the ED43B125), the available fault current (18kA at 480V AC), phase connection (ABC), and terminal type (load side lug). Ensure the fixed instantaneous trip matches your coordination study. Consult a licensed engineer for proper sizing.

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 ed-frame siemens molded case circuit breakers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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