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Siemens Miniature Circuit Breaker: 0.5 A Amps, 125V DC, 10kA at 277/480V AC, Screw Clamp - C-Curve, 2-Pole UL489 DIN Rail-Mount Miniature Circuit Breakers
SiemensC-Curve, 2-Pole UL489 DIN Rail-Mount Miniature Circuit Breakers

Siemens Miniature Circuit Breaker: 0.5 A Amps, 125V DC, 10kA at 277/480V AC, Screw Clamp

The SIEMENS IEC Miniature Circuit Breaker (0.5 A Amps) is a C-Curve, 2-Pole UL489 DIN Rail-Mount device. It is rated for 10kA at 277/480V AC and 125V DC, with screw clamp terminals. This model (MPN 5SJ42057HG42)…

SKU 3G-OTH-21035

Brand
Siemens
Item
Miniature Circuit Breaker: 0.5 A Amps, 125V DC, 10kA at 277/480V AC, Screw Clamp
Category
C-Curve, 2-Pole UL489 DIN Rail-Mount Miniature Circuit Breakers
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Technical Specifications

Siemens
Manufacturer Part Number
5SJ42057HG42
Type
10kA at 277/480V AC, Screw Clamp, 5SJ4
DC
125V
Max. AIR Rating
10kA at 277/480V AC
AC Voltage Rating
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 (0.5 A Amps) is a C-Curve, 2-Pole UL489 DIN Rail-Mount device. It is rated for 10kA at 277/480V AC and 125V DC, with screw clamp terminals. This model (MPN 5SJ42057HG42) provides overcurrent protection in industrial electrical systems.

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 5SJ42057HG42 miniature circuit breaker used for?

This SIEMENS IEC miniature circuit breaker provides overcurrent protection in industrial electrical systems. It is suitable for branch circuits, control panels, and equipment requiring a 0.5 A C-Curve, 2-pole UL489 DIN rail-mount device, rated for 277/480V AC and 125V DC applications.

What are the specifications of the SIEMENS 5SJ42057HG42?

The SIEMENS 5SJ42057HG42 is a 0.5 A, C-Curve, 2-pole UL489 miniature circuit breaker. It has a max. AIR rating of 10kA at 277/480V AC, a DC voltage rating of 125V DC, and screw clamp terminals. It is designed for DIN rail mounting.

Where to buy the SIEMENS 5SJ42057HG42 worldwide?

3G Electric supplies the SIEMENS 5SJ42057HG42 miniature circuit breaker worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to install the SIEMENS 5SJ42057HG42 miniature circuit breaker?

Install the SIEMENS 5SJ42057HG42 on a standard DIN rail. Ensure the circuit is de-energized. Connect wires to the screw clamp terminals per the torque specifications in the product manual. Verify polarity for DC applications. Always follow local electrical codes and manufacturer guidelines.

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 c-curve, 2-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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SIEMENS IEC Miniature Circuit Breaker: 3 A Amps, 125V DC, 10kA at 277/480V AC, Screw Clamp, 5SJ4 (MPN 5SJ42037HG42). Key specifications — DC Voltage Rating: 125V DC; Brand: SIEMENS; Max. AIR Rating: 10kA at 277/480V AC; Terminal Connection: Screw Clamp; AC Voltage Rating: 277/480V AC.
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SIEMENS IEC Miniature Circuit Breaker: 3 A Amps, 125V DC, 10kA at 277/480V AC, Screw Clamp, 5SJ4 (MPN 5SJ42037HG42). Key specifications — DC Voltage Rating: 125V DC; Brand: SIEMENS; Max. AIR Rating: 10kA at 277/480V AC; Terminal Connection: Screw Clamp; AC Voltage Rating: 277/480V AC.
SIEMENS IEC Miniature Circuit Breaker: 1 A Amps, 125V DC, 10kA at 277/480V AC, Screw Clamp, 5SJ4 (MPN 5SJ42017HG42). Key specifications — DC Voltage Rating: 125V DC; Brand: SIEMENS; Max. AIR Rating: 10kA at 277/480V AC; Terminal Connection: Screw Clamp; AC Voltage Rating: 277/480V AC.
Siemens
SIEMENS IEC Miniature Circuit Breaker: 1 A Amps, 125V DC, 10kA at 277/480V AC, Screw Clamp, 5SJ4 (MPN 5SJ42017HG42). Key specifications — DC Voltage Rating: 125V DC; Brand: SIEMENS; Max. AIR Rating: 10kA at 277/480V AC; Terminal Connection: Screw Clamp; AC Voltage Rating: 277/480V AC.