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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 (SKU 3CMR5) is a 40 A ED-Frame unit from the HED4 series. It features a fixed instantaneous trip, a maximum AIR rating of 42kA at 480V AC, and ABC phase connection with…

SKU 3G-OTH-22303

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
HED43B040
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 Molded Case Circuit Breaker (SKU 3CMR5) is a 40 A ED-Frame unit from the HED4 series. It features a fixed instantaneous trip, a maximum AIR rating of 42kA at 480V AC, and ABC phase connection with load-side lug terminals.

Frequently Asked Questions

What is the SIEMENS HED43B040 molded case circuit breaker used for?

The SIEMENS HED43B040 is a 40 A ED-Frame molded case circuit breaker from the HED4 series. It protects electrical circuits from overloads and short circuits in industrial and commercial power distribution systems, particularly where ABC phase connection and a 42kA interrupting rating at 480V AC are required.

What are the specifications of the SIEMENS HED43B040 circuit breaker?

The SIEMENS HED43B040 is a 40 A ED-Frame molded case circuit breaker from the HED4 series. It has a fixed instantaneous trip, a maximum AIR rating of 42kA at 480V AC, ABC phase connection, and load-side lug terminals. The manufacturer part number is HED43B040.

Where to buy the SIEMENS HED43B040 circuit breaker worldwide?

3G Electric supplies the SIEMENS HED43B040 molded case circuit breaker worldwide. As a global industrial equipment distributor established in 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

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

To select the correct SIEMENS molded case circuit breaker, verify the required current rating (e.g., 40 A), interrupting capacity (e.g., 42kA at 480V AC), phase connection (e.g., ABC), and terminal type (e.g., load-side lug). The HED4 series offers fixed instantaneous trip for consistent protection. Consult a qualified engineer 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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