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Siemens Molded Case Circuit Breaker: 45 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: 45 A Amps, 42kA at 480V AC, Fixed, Load Side Lug

The SIEMENS HED4 ED-Frame Molded Case Circuit Breaker (MPN HED42B045) is a 45 A rated device with a maximum AIR rating of 42kA at 480V AC. It features a fixed instantaneous trip, ABC phase connection, and load side…

SKU 3G-OTH-21912

Brand
Siemens
Item
Molded Case Circuit Breaker: 45 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
HED42B045
Series
HED4
Type
42kA at 480V AC, Fixed, Load Side Lug, ABC, HED4
Max. AIR Rating
42kA 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 HED4 ED-Frame Molded Case Circuit Breaker (MPN HED42B045) is a 45 A rated device with a maximum AIR rating of 42kA at 480V AC. It features a fixed instantaneous trip, ABC phase connection, and load side lug terminal connection.

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 HED4 molded case circuit breaker used for?

The SIEMENS HED4 ED-Frame molded case circuit breaker is used for overcurrent protection in industrial and commercial electrical distribution systems. It protects branch circuits, feeders, and equipment from short circuits and overloads, with a 45 A rating and 42kA interrupting capacity at 480V AC.

What are the specifications of the SIEMENS HED42B045 circuit breaker?

The SIEMENS HED42B045 is a 45 A molded case circuit breaker with a maximum AIR rating of 42kA at 480V AC. It has a fixed instantaneous trip, ABC phase connection, and load side lug terminal connection. It is part of the HED4 series and uses an ED-frame design.

Where to buy the SIEMENS HED42B045 circuit breaker worldwide?

You can source the SIEMENS HED42B045 circuit breaker 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 on this Siemens molded case circuit breaker.

How to select the correct SIEMENS HED4 circuit breaker for your application?

To select the correct SIEMENS HED4 circuit breaker, verify your system voltage (480V AC), required ampacity (45 A), and interrupting capacity (42kA). Confirm phase connection (ABC) and terminal type (load side lug). The fixed instantaneous trip suits motor or transformer protection. Consult a licensed electrician for proper coordination.

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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