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Siemens Miniature Circuit Breaker: 3 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: 3 A Amps, 125V DC, 10kA at 277/480V AC, Screw Clamp

The SIEMENS IEC Miniature Circuit Breaker (SKU 30YC72, MPN 5SJ42037HG42) is a 3 A, C-Curve, 2-Pole UL489 DIN Rail-Mount unit. It is rated for 10kA at 277/480V AC and 125V DC, with screw clamp terminals.

SKU 3G-OTH-21056

Brand
Siemens
Item
Miniature Circuit Breaker: 3 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
5SJ42037HG42
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 (SKU 30YC72, MPN 5SJ42037HG42) is a 3 A, C-Curve, 2-Pole UL489 DIN Rail-Mount unit. It is rated for 10kA at 277/480V AC and 125V DC, with screw clamp terminals.

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 5SJ42037HG42 miniature circuit breaker used for?

The SIEMENS 5SJ42037HG42 is a 3 A, C-Curve, 2-pole UL489 miniature circuit breaker for overcurrent protection in industrial control panels, HVAC equipment, and machinery. It mounts on DIN rail and handles 10kA at 277/480V AC or 125V DC, making it suitable for branch circuits and equipment in global facilities.

What are the specifications of the SIEMENS 5SJ42037HG42?

This SIEMENS IEC miniature circuit breaker (MPN 5SJ42037HG42) is rated 3 A, C-Curve, 2-pole, with a max AIR of 10kA at 277/480V AC and 125V DC. It uses screw clamp terminals and is UL489 listed for DIN-rail mounting. The AC voltage rating is 277/480V AC; DC voltage rating is 125V DC.

Where to buy the SIEMENS 5SJ42037HG42 worldwide?

3G Electric supplies the SIEMENS 5SJ42037HG42 miniature circuit breaker to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this UL489 DIN-rail breaker.

How to install the SIEMENS 5SJ42037HG42 on a DIN rail?

To install the SIEMENS 5SJ42037HG42, snap the breaker onto a standard 35 mm DIN rail until it locks. Ensure the rail is clean and the breaker is oriented with the line side up. Use a screwdriver to tighten the screw clamp terminals to the manufacturer's torque spec. Always de-energize the circuit before installation.

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: 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 IEC Miniature Circuit Breaker: 32 A Amps, 125V DC, 10kA at 277/480V AC, Screw Clamp, 5SJ4 (MPN 5SJ42327HG42). 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: 32 A Amps, 125V DC, 10kA at 277/480V AC, Screw Clamp, 5SJ4 (MPN 5SJ42327HG42). 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.