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Siemens Miniature Circuit Breaker: 1 A Amps, 125V DC, 10kA at 277/480V AC, Screw Clamp - D-Curve, 3-Pole UL489 DIN Rail-Mount Miniature Circuit Breakers
SiemensD-Curve, 3-Pole UL489 DIN Rail-Mount Miniature Circuit Breakers

Siemens Miniature Circuit Breaker: 1 A Amps, 125V DC, 10kA at 277/480V AC, Screw Clamp

The SIEMENS IEC Miniature Circuit Breaker (MPN 5SJ43018HG42) is a D-Curve, 3-Pole UL489 DIN Rail-Mount unit rated at 1 A Amps. It features a Max. AIR Rating of 10kA at 277/480V AC, a DC Voltage Rating of 125V DC, and…

SKU 3G-OTH-21018

Brand
Siemens
Item
Miniature Circuit Breaker: 1 A Amps, 125V DC, 10kA at 277/480V AC, Screw Clamp
Category
D-Curve, 3-Pole UL489 DIN Rail-Mount Miniature Circuit Breakers
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Technical Specifications

Siemens
Manufacturer Part Number
5SJ43018HG42
Type
10kA at 277/480V AC, Screw Clamp, D
DC
125V
Max. AIR Rating
10kA at 277/480V AC
DC Voltage Rating
125V DC
Terminal Connection
Screw Clamp
View Full Spec Sheet

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

Product Description

The SIEMENS IEC Miniature Circuit Breaker (MPN 5SJ43018HG42) is a D-Curve, 3-Pole UL489 DIN Rail-Mount unit rated at 1 A Amps. It features a Max. AIR Rating of 10kA at 277/480V AC, a DC Voltage Rating of 125V DC, and a Screw Clamp 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 5SJ43018HG42 miniature circuit breaker used for?

The SIEMENS 5SJ43018HG42 is a D-curve, 3-pole UL489 miniature circuit breaker rated at 1 A. It protects industrial equipment and DC circuits from overcurrent and short circuits, commonly used in control panels, machinery, and power distribution systems requiring 125V DC or 277/480V AC protection.

What are the specifications of the SIEMENS 5SJ43018HG42?

The SIEMENS 5SJ43018HG42 is a D-curve, 3-pole miniature circuit breaker with a 1 A amp rating. It has a DC voltage rating of 125V DC and a maximum AIR rating of 10kA at 277/480V AC. Terminal connection is screw clamp, and it is UL489 listed for DIN rail mounting.

Where to buy the SIEMENS 5SJ43018HG42 worldwide?

You can source the SIEMENS 5SJ43018HG42 miniature 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 on this Siemens-branded component.

How to select the right SIEMENS miniature circuit breaker for DC applications?

For DC applications, select a breaker with a DC voltage rating matching your system, such as the 125V DC rating on the SIEMENS 5SJ43018HG42. Ensure the amp rating (1 A) and curve type (D for high inrush loads) suit your circuit. Always verify UL489 listing for branch circuit protection.

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 d-curve, 3-pole ul489 din rail-mount miniature 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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