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Siemens ED42B125 ED-Frame Molded Case Circuit Breaker - ED-Frame Siemens Molded Case Circuit Breakers
SiemensED-Frame Siemens Molded Case Circuit Breakers

Siemens ED42B125 ED-Frame Molded Case Circuit Breaker

The Siemens ED-Frame Molded Case Circuit Breaker (SKU ED42B125, MPN ED42B125) 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…

SKU 3G-OTH-22119

Brand
Siemens
Item
ED42B125 ED-Frame Molded Case Circuit Breaker
Category
ED-Frame Siemens Molded Case Circuit Breakers
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

Siemens
Manufacturer Part Number
ED42B125
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 ED42B125, MPN ED42B125) 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 with load side lug terminals.

Frequently Asked Questions

What is the Siemens ED42B125 molded case circuit breaker used for?

The Siemens ED42B125 is a 125 A molded case circuit breaker from the ED4 series, used for overcurrent protection in industrial power distribution panels, motor control centers, and branch circuits. It is suitable for applications requiring a fixed instantaneous trip and ABC phase connection, with a maximum AIR rating of 18kA at 480V AC.

What are the specifications of the Siemens ED42B125 circuit breaker?

The Siemens ED42B125 is a 125 A molded case circuit breaker from the ED4 series. It has a fixed instantaneous trip, a maximum AIR rating of 18kA at 480V AC, ABC phase connection, and load side lug terminals. The manufacturer part number is ED42B125, and it is an ED-frame device.

Where to buy the Siemens ED42B125 circuit breaker worldwide?

You can source the Siemens ED42B125 circuit breaker 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; we provide reliable sourcing for this ED4 series breaker.

How to select the correct Siemens ED4 circuit breaker for your application?

To select the correct Siemens ED4 circuit breaker, verify the continuous current rating (125 A for the ED42B125), the maximum AIR rating (18kA at 480V AC), and the phase connection (ABC). Ensure the fixed instantaneous trip matches your system's coordination requirements. Consult the Siemens ED4 series documentation for application-specific guidelines.

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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Compatible alternatives & equivalents

Cross-referenced by specification & description
The Siemens ED43B025 is a 25 A ED-Frame molded case circuit breaker from the ED4 series. It provides overcurrent protection with a fixed instantaneous trip and a maximum interrupting rating of 18 kA at 480 V AC. The breaker features ABC phase connection and load side lug terminals. Typical applications include branch circuit protection in panelboards and switchboards within industrial and commercial electrical distribution systems
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The Siemens ED43B025 is a 25 A ED-Frame molded case circuit breaker from the ED4 series. It provides overcurrent protection with a fixed instantaneous trip and a maximum interrupting rating of 18 kA at 480 V AC. The breaker features ABC phase connection and load side lug terminals. Typical applications include branch circuit protection in panelboards and switchboards within industrial and commercial electrical distribution systems
SIEMENS Molded Case Circuit Breaker: 45 A Amps, 18kA at 480V AC, Fixed, Load Side Lug, ABC, ED4 (MPN ED42B045)
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SIEMENS Molded Case Circuit Breaker: 45 A Amps, 18kA at 480V AC, Fixed, Load Side Lug, ABC, ED4 (MPN ED42B045)
Siemens ED42B110 is an ED4 series molded case circuit breaker rated for 110 A with a maximum AIR rating of 18kA at 480V AC. It features a fixed instantaneous trip, ABC phase connection, and load side lug terminals. Suitable for overcurrent protection in panelboards and switchboards within electrical distribution systems
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Siemens ED42B110 is an ED4 series molded case circuit breaker rated for 110 A with a maximum AIR rating of 18kA at 480V AC. It features a fixed instantaneous trip, ABC phase connection, and load side lug terminals. Suitable for overcurrent protection in panelboards and switchboards within electrical distribution systems
SIEMENS Molded Case Circuit Breaker: 125 A Amps, 18kA at 480V AC, Fixed, Load Side Lug, ABC, ED4 (MPN ED43B125)
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SIEMENS Molded Case Circuit Breaker: 125 A Amps, 18kA at 480V AC, Fixed, Load Side Lug, ABC, ED4 (MPN ED43B125)
The Siemens ED41B045 is a 45 A molded case circuit breaker from the ED4 series. It has a maximum AIR rating of 22kA at 277V AC, fixed instantaneous trip, ABC phase connection, and load side lug terminals. Suitable for overcurrent protection in branch circuits within panelboards, switchboards, and motor control centers
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The Siemens ED41B045 is a 45 A molded case circuit breaker from the ED4 series. It has a maximum AIR rating of 22kA at 277V AC, fixed instantaneous trip, ABC phase connection, and load side lug terminals. Suitable for overcurrent protection in branch circuits within panelboards, switchboards, and motor control centers
Siemens ED4-series molded case circuit breaker rated 25 A with a maximum interrupting rating of 22 kA at 277 V AC. Features a fixed instantaneous trip, ABC phase connection, and load-side lug terminals. Suitable for branch circuit protection in panelboards and switchboards
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Siemens ED4-series molded case circuit breaker rated 25 A with a maximum interrupting rating of 22 kA at 277 V AC. Features a fixed instantaneous trip, ABC phase connection, and load-side lug terminals. Suitable for branch circuit protection in panelboards and switchboards

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The Siemens ED42B080 is an 80-amp molded case circuit breaker from the ED4 series. It provides branch-circuit protection with a maximum interrupting rating of 18kA at 480V AC. Features include a fixed instantaneous trip and load-side lug terminals, suitable for any phase connection in industrial and commercial power distribution systems
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The Siemens ED42B080 is an 80-amp molded case circuit breaker from the ED4 series. It provides branch-circuit protection with a maximum interrupting rating of 18kA at 480V AC. Features include a fixed instantaneous trip and load-side lug terminals, suitable for any phase connection in industrial and commercial power distribution systems
Siemens ED4 series molded case circuit breaker rated 15 A with a maximum interrupting rating of 18 kA at 480 V AC. Features a fixed instantaneous trip, ABC phase connection, and load-side lug terminals. Suitable for overcurrent protection in branch circuits, feeder protection, and motor control applications in electrical distribution systems
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Siemens ED4 series molded case circuit breaker rated 15 A with a maximum interrupting rating of 18 kA at 480 V AC. Features a fixed instantaneous trip, ABC phase connection, and load-side lug terminals. Suitable for overcurrent protection in branch circuits, feeder protection, and motor control applications in electrical distribution systems
The Siemens ED22B045 is a 45 A molded case circuit breaker from the ED2 series. It has a maximum AIR rating of 10kA at 240V AC, a fixed instantaneous trip, and load-side lug terminals. Suitable for overcurrent protection in branch circuits, feeder protection, and motor control centers in industrial and commercial electrical distribution panels
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The Siemens ED22B045 is a 45 A molded case circuit breaker from the ED2 series. It has a maximum AIR rating of 10kA at 240V AC, a fixed instantaneous trip, and load-side lug terminals. Suitable for overcurrent protection in branch circuits, feeder protection, and motor control centers in industrial and commercial electrical distribution panels
The Siemens ED43B090 is a 90 A molded case circuit breaker from the ED4 series. It features a fixed instantaneous trip, a maximum interrupting rating of 18 kA at 480 V AC, and ABC phase connection. Termination is via load side lugs. Suitable for overload and short-circuit protection in electrical distribution systems
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The Siemens ED43B090 is a 90 A molded case circuit breaker from the ED4 series. It features a fixed instantaneous trip, a maximum interrupting rating of 18 kA at 480 V AC, and ABC phase connection. Termination is via load side lugs. Suitable for overload and short-circuit protection in electrical distribution systems
Siemens ED23B040 is a 40 A molded case circuit breaker from the ED2 series, rated for 10kA at 240V AC. It features a fixed instantaneous trip, ABC phase connection, and load-side lug terminals. Suitable for overcurrent protection in electrical distribution systems
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Siemens ED23B040 is a 40 A molded case circuit breaker from the ED2 series, rated for 10kA at 240V AC. It features a fixed instantaneous trip, ABC phase connection, and load-side lug terminals. Suitable for overcurrent protection in electrical distribution systems
Siemens ED43B035 is a 35 A molded case circuit breaker from the ED4 series. It has a maximum AIR rating of 18kA at 480V AC, fixed instantaneous trip, ABC phase connection, and load-side lug terminals. This ED-frame breaker is used for overload and short-circuit protection in power distribution systems
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Siemens ED43B035 is a 35 A molded case circuit breaker from the ED4 series. It has a maximum AIR rating of 18kA at 480V AC, fixed instantaneous trip, ABC phase connection, and load-side lug terminals. This ED-frame breaker is used for overload and short-circuit protection in power distribution systems
Siemens HED4 series molded case circuit breaker rated 50 A with a maximum interrupting rating of 42 kA at 480 V AC. Features fixed instantaneous trip, ABC phase connection, and load side lug terminals. Suitable for overcurrent protection in power distribution panels, motor control centers, and switchboards
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Siemens HED4 series molded case circuit breaker rated 50 A with a maximum interrupting rating of 42 kA at 480 V AC. Features fixed instantaneous trip, ABC phase connection, and load side lug terminals. Suitable for overcurrent protection in power distribution panels, motor control centers, and switchboards
70 A molded case circuit breaker from the ED4 series with a maximum AIR rating of 22kA at 277V AC. Features a fixed instantaneous trip and accepts any phase connection. Equipped with load-side lug terminals for wiring. Suitable for overcurrent protection in branch circuits, feeder protection, and equipment disconnection in electrical distribution systems
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70 A molded case circuit breaker from the ED4 series with a maximum AIR rating of 22kA at 277V AC. Features a fixed instantaneous trip and accepts any phase connection. Equipped with load-side lug terminals for wiring. Suitable for overcurrent protection in branch circuits, feeder protection, and equipment disconnection in electrical distribution systems