Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
RFQ CartGet a QuoteSign inSign up
Siemens Molded Case Circuit Breaker: 45 A Amps, 25kA at 277V 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, 25kA at 277V AC, Fixed, Load Side Lug

The SIEMENS Molded Case Circuit Breaker is an ED-Frame unit from the HED4 series, rated for 45 A amps with a maximum AIR rating of 25kA at 277V AC. It features a fixed instantaneous trip, ABC phase connection, and…

SKU 3G-OTH-22663

Brand
Siemens
Item
Molded Case Circuit Breaker: 45 A Amps, 25kA at 277V AC, Fixed, Load Side Lug
Category
ED-Frame Siemens Molded Case Circuit Breakers
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

Siemens
Manufacturer Part Number
HED41B045
Series
HED4
Type
25kA at 277V AC, Fixed, Load Side Lug, ABC, HED4
Max. AIR Rating
25kA at 277V AC
Phase Connection
ABC
Instantaneous Trip
Fixed
Terminal Connection
Load Side Lug
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SIEMENS Molded Case Circuit Breaker is an ED-Frame unit from the HED4 series, rated for 45 A amps with a maximum AIR rating of 25kA at 277V AC. It features a fixed instantaneous trip, ABC phase connection, and load side lug terminal connection (MPN HED41B045).

Frequently Asked Questions

What is the SIEMENS HED41B045 molded case circuit breaker used for?

The SIEMENS HED41B045 is an ED-frame molded case circuit breaker used for overcurrent protection in industrial and commercial electrical distribution systems. It is rated for 45 A amps with a 25kA interrupting rating at 277V AC, making it suitable for branch circuit protection in panelboards and switchboards.

What are the specifications of the SIEMENS HED41B045 circuit breaker?

The SIEMENS HED41B045 is an ED-frame, HED4 series molded case circuit breaker rated at 45 A amps with a maximum AIR rating of 25kA at 277V AC. It features a fixed instantaneous trip, ABC phase connection, and load side lug terminal connection. The manufacturer part number is HED41B045.

Where to buy the SIEMENS HED41B045 circuit breaker worldwide?

3G Electric supplies the SIEMENS HED41B045 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 on this ED-frame unit.

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

To select the correct SIEMENS molded case circuit breaker, verify the continuous current rating (45 A for the HED41B045), the maximum interrupting rating (25kA at 277V AC), phase connection (ABC), and terminal type (load side lug). Ensure the frame size (ED-frame) matches your panelboard or switchboard requirements.

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.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Similar products

Matched by specification & description
SIEMENS Molded Case Circuit Breaker: 35 A Amps, 25kA at 277V AC, Fixed, Load Side Lug, ABC, HED4 (MPN HED41B035). Key specifications — Phase Connection: ABC; Instantaneous Trip: Fixed; Terminal Connection: Load Side Lug; Series: HED4; Max. AIR Rating: 25kA at 277V AC.
Siemens
SIEMENS Molded Case Circuit Breaker: 35 A Amps, 25kA at 277V AC, Fixed, Load Side Lug, ABC, HED4 (MPN HED41B035). Key specifications — Phase Connection: ABC; Instantaneous Trip: Fixed; Terminal Connection: Load Side Lug; Series: HED4; Max. AIR Rating: 25kA at 277V AC.
SIEMENS Molded Case Circuit Breaker: 25 A Amps, 65kA at 277V AC, Fixed, Load Side Lug, ABC, HED4 (MPN HED41B025). Key specifications — Phase Connection: ABC; Instantaneous Trip: Fixed; Terminal Connection: Load Side Lug; Series: HED4; Max. AIR Rating: 65kA at 277V AC.
Siemens
SIEMENS Molded Case Circuit Breaker: 25 A Amps, 65kA at 277V AC, Fixed, Load Side Lug, ABC, HED4 (MPN HED41B025). Key specifications — Phase Connection: ABC; Instantaneous Trip: Fixed; Terminal Connection: Load Side Lug; Series: HED4; Max. AIR Rating: 65kA at 277V AC.
SIEMENS Molded Case Circuit Breaker: 35 A Amps, 42kA at 480V AC, Fixed, Load Side Lug, ABC, HED4 (MPN HED42B035). Key specifications — Phase Connection: ABC; Instantaneous Trip: Fixed; Terminal Connection: Load Side Lug; Series: HED4; Max. AIR Rating: 42kA at 480V AC.
Siemens
SIEMENS Molded Case Circuit Breaker: 35 A Amps, 42kA at 480V AC, Fixed, Load Side Lug, ABC, HED4 (MPN HED42B035). Key specifications — Phase Connection: ABC; Instantaneous Trip: Fixed; Terminal Connection: Load Side Lug; Series: HED4; Max. AIR Rating: 42kA at 480V AC.
SIEMENS Molded Case Circuit Breaker: 45 A Amps, 42kA at 480V AC, Fixed, Load Side Lug, ABC, HED4 (MPN HED42B045). Key specifications — Phase Connection: ABC; Instantaneous Trip: Fixed; Terminal Connection: Load Side Lug; Series: HED4; Max. AIR Rating: 42kA at 480V AC.
Siemens
SIEMENS Molded Case Circuit Breaker: 45 A Amps, 42kA at 480V AC, Fixed, Load Side Lug, ABC, HED4 (MPN HED42B045). Key specifications — Phase Connection: ABC; Instantaneous Trip: Fixed; Terminal Connection: Load Side Lug; Series: HED4; Max. AIR Rating: 42kA at 480V AC.
SIEMENS Molded Case Circuit Breaker: 25 A Amps, 42kA at 480V AC, Fixed, Load Side Lug, ABC, HED4 (MPN HED43B025). Key specifications — Phase Connection: ABC; Instantaneous Trip: Fixed; Terminal Connection: Load Side Lug; Series: HED4; Max. AIR Rating: 42kA at 480V AC.
Siemens
SIEMENS Molded Case Circuit Breaker: 25 A Amps, 42kA at 480V AC, Fixed, Load Side Lug, ABC, HED4 (MPN HED43B025). Key specifications — Phase Connection: ABC; Instantaneous Trip: Fixed; Terminal Connection: Load Side Lug; Series: HED4; Max. AIR Rating: 42kA at 480V AC.
SIEMENS Molded Case Circuit Breaker: 45 A Amps, 42kA at 480V AC, Fixed, Load Side Lug, ABC, HED4 (MPN HED43B045). Key specifications — Phase Connection: ABC; Instantaneous Trip: Fixed; Terminal Connection: Load Side Lug; Series: HED4; Max. AIR Rating: 42kA at 480V AC.
Siemens
SIEMENS Molded Case Circuit Breaker: 45 A Amps, 42kA at 480V AC, Fixed, Load Side Lug, ABC, HED4 (MPN HED43B045). Key specifications — Phase Connection: ABC; Instantaneous Trip: Fixed; Terminal Connection: Load Side Lug; Series: HED4; Max. AIR Rating: 42kA at 480V AC.

More from Siemens

View all Siemens parts →
SIEMENS Molded Case Circuit Breaker: 60 A Amps, 10kA at 240V AC, Fixed, Load Side Lug, ABC, ED2 (MPN ED23B060). Key specifications — Phase Connection: ABC; Instantaneous Trip: Fixed; Terminal Connection: Load Side Lug; Series: ED2; Max. AIR Rating: 10kA at 240V AC.
Siemens
SIEMENS Molded Case Circuit Breaker: 60 A Amps, 10kA at 240V AC, Fixed, Load Side Lug, ABC, ED2 (MPN ED23B060). Key specifications — Phase Connection: ABC; Instantaneous Trip: Fixed; Terminal Connection: Load Side Lug; Series: ED2; Max. AIR Rating: 10kA at 240V AC.
SIEMENS Molded Case Circuit Breaker: 40 A Amps, 22kA at 277V AC, Fixed, Load Side Lug, Any, ED4 (MPN ED41B040). Key specifications — Phase Connection: Any; Instantaneous Trip: Fixed; Terminal Connection: Load Side Lug; Series: ED4; Max. AIR Rating: 22kA at 277V AC.
Siemens
SIEMENS Molded Case Circuit Breaker: 40 A Amps, 22kA at 277V AC, Fixed, Load Side Lug, Any, ED4 (MPN ED41B040). Key specifications — Phase Connection: Any; Instantaneous Trip: Fixed; Terminal Connection: Load Side Lug; Series: ED4; Max. AIR Rating: 22kA at 277V AC.
SIEMENS Molded Case Circuit Breaker: 30 A Amps, 18kA at 480V AC, Fixed, Load Side Lug, ABC, ED4 (MPN ED43B030). Key specifications — Phase Connection: ABC; Instantaneous Trip: Fixed; Terminal Connection: Load Side Lug; Series: ED4; Max. AIR Rating: 18kA at 480V AC.
Siemens
SIEMENS Molded Case Circuit Breaker: 30 A Amps, 18kA at 480V AC, Fixed, Load Side Lug, ABC, ED4 (MPN ED43B030). Key specifications — Phase Connection: ABC; Instantaneous Trip: Fixed; Terminal Connection: Load Side Lug; Series: ED4; Max. AIR Rating: 18kA at 480V AC.
SIEMENS Molded Case Circuit Breaker: 15 A Amps, 65kA at 277V AC, Fixed, Load Side Lug, Any, HED4 (MPN HED41B015). Key specifications — Phase Connection: Any; Instantaneous Trip: Fixed; Terminal Connection: Load Side Lug; Series: HED4; Max. AIR Rating: 65kA at 277V AC.
Siemens
SIEMENS Molded Case Circuit Breaker: 15 A Amps, 65kA at 277V AC, Fixed, Load Side Lug, Any, HED4 (MPN HED41B015). Key specifications — Phase Connection: Any; Instantaneous Trip: Fixed; Terminal Connection: Load Side Lug; Series: HED4; Max. AIR Rating: 65kA at 277V AC.
SIEMENS Molded Case Circuit Breaker: 50 A Amps, 10kA at 240V AC, Fixed, Load Side Lug, ABC, ED2 (MPN ED23B050). Key specifications — Phase Connection: ABC; Instantaneous Trip: Fixed; Terminal Connection: Load Side Lug; Series: ED2; Max. AIR Rating: 10kA at 240V AC.
Siemens
SIEMENS Molded Case Circuit Breaker: 50 A Amps, 10kA at 240V AC, Fixed, Load Side Lug, ABC, ED2 (MPN ED23B050). Key specifications — Phase Connection: ABC; Instantaneous Trip: Fixed; Terminal Connection: Load Side Lug; Series: ED2; Max. AIR Rating: 10kA at 240V AC.
SIEMENS Molded Case Circuit Breaker: 60 A Amps, 18kA at 480V AC, Fixed, Load Side Lug, Any, ED4 (MPN ED42B060). Key specifications — Phase Connection: Any; Instantaneous Trip: Fixed; Terminal Connection: Load Side Lug; Series: ED4; Max. AIR Rating: 18kA at 480V AC.
Siemens
SIEMENS Molded Case Circuit Breaker: 60 A Amps, 18kA at 480V AC, Fixed, Load Side Lug, Any, ED4 (MPN ED42B060). Key specifications — Phase Connection: Any; Instantaneous Trip: Fixed; Terminal Connection: Load Side Lug; Series: ED4; Max. AIR Rating: 18kA at 480V AC.
SIEMENS Molded Case Circuit Breaker: 70 A Amps, 42kA at 480V AC, Fixed, Load Side Lug, Any, HED4 (MPN HED42B070). Key specifications — Phase Connection: Any; Instantaneous Trip: Fixed; Terminal Connection: Load Side Lug; Series: HED4; Max. AIR Rating: 42kA at 480V AC.
Siemens
SIEMENS Molded Case Circuit Breaker: 70 A Amps, 42kA at 480V AC, Fixed, Load Side Lug, Any, HED4 (MPN HED42B070). Key specifications — Phase Connection: Any; Instantaneous Trip: Fixed; Terminal Connection: Load Side Lug; Series: HED4; Max. AIR Rating: 42kA at 480V AC.
SIEMENS Molded Case Circuit Breaker: 70 A Amps, 18kA at 480V AC, Fixed, Load Side Lug, Any, ED4 (MPN ED42B070). Key specifications — Phase Connection: Any; Instantaneous Trip: Fixed; Terminal Connection: Load Side Lug; Series: ED4; Max. AIR Rating: 18kA at 480V AC.
Siemens
SIEMENS Molded Case Circuit Breaker: 70 A Amps, 18kA at 480V AC, Fixed, Load Side Lug, Any, ED4 (MPN ED42B070). Key specifications — Phase Connection: Any; Instantaneous Trip: Fixed; Terminal Connection: Load Side Lug; Series: ED4; Max. AIR Rating: 18kA at 480V AC.