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Siemens Molded Case Circuit Breaker: 40 A Amps, 42kA 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: 40 A Amps, 42kA at 480V AC, Fixed, Load Side Lug

The SIEMENS Molded Case Circuit Breaker is a 40 A ED-Frame unit from the HED4 series, rated for a maximum AIR of 42kA at 480V AC. It features a fixed instantaneous trip and load-side lug terminal connections, with…

SKU 3G-OTH-22313

Brand
Siemens
Item
Molded Case Circuit Breaker: 40 A Amps, 42kA 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
HED42B040
Series
HED4
Type
42kA at 480V AC, Fixed, Load Side Lug, Any, HED4
Max. AIR Rating
42kA at 480V AC
Phase Connection
Any
Instantaneous Trip
Fixed
Terminal Connection
Load Side Lug
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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SIEMENS Molded Case Circuit Breaker is a 40 A ED-Frame unit from the HED4 series, rated for a maximum AIR of 42kA at 480V AC. It features a fixed instantaneous trip and load-side lug terminal connections, with any phase connection compatibility. This breaker is identified by manufacturer part number HED42B040.

Frequently Asked Questions

What is the SIEMENS HED42B040 molded case circuit breaker used for?

The SIEMENS HED42B040 is a 40 A ED-Frame molded case circuit breaker from the HED4 series, used for overcurrent protection in industrial and commercial electrical distribution systems. It is suitable for branch-circuit protection in panelboards, switchboards, and motor control centers where a fixed instantaneous trip and load-side lug connections are required.

What are the specifications of the SIEMENS HED42B040 circuit breaker?

The SIEMENS HED42B040 is a 40 A ED-Frame molded case circuit breaker from the HED4 series. It has a maximum AIR rating of 42kA at 480V AC, fixed instantaneous trip, load-side lug terminal connections, and any phase connection compatibility. The manufacturer part number is HED42B040.

Where to buy the SIEMENS HED42B040 circuit breaker worldwide?

You can source the SIEMENS HED42B040 molded case circuit breaker through 3G Electric, a global industrial equipment distributor established in 1990. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time on this Siemens HED4 series breaker.

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

To select the correct Siemens molded case circuit breaker, verify the continuous current rating (40 A for the HED42B040), the maximum available fault current (42kA at 480V AC), and the required terminal connection type (load-side lug). Ensure the frame size (ED-Frame) and trip characteristics (fixed instantaneous) match your distribution system's voltage and phase configuration.

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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