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Siemens Miniature Circuit Breaker: 40 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: 40 A Amps, 125V DC, 10kA at 277/480V AC, Screw Clamp

The SIEMENS IEC Miniature Circuit Breaker (SKU 30YC86, MPN 5SJ42407HG42) is a C-Curve, 2-Pole UL489 DIN Rail-Mount unit rated at 40 A. It carries a Max. AIR Rating of 10kA at 277/480V AC and an AC Voltage Rating of…

SKU 3G-OTH-20420

Brand
Siemens
Item
Miniature Circuit Breaker: 40 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
5SJ42407HG42
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
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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SIEMENS IEC Miniature Circuit Breaker (SKU 30YC86, MPN 5SJ42407HG42) is a C-Curve, 2-Pole UL489 DIN Rail-Mount unit rated at 40 A. It carries a Max. AIR Rating of 10kA at 277/480V AC and an AC Voltage Rating of 277/480V AC, with a DC Voltage Rating of 125V DC. The terminal connection is a Screw Clamp.

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 5SJ42407HG42 miniature circuit breaker used for?

The SIEMENS 5SJ42407HG42 is a C-Curve, 2-Pole UL489 DIN Rail-Mount miniature circuit breaker rated at 40 A. It protects branch circuits in industrial and commercial panels against overloads and short circuits, with a 10kA interrupting rating at 277/480V AC and 125V DC capability.

What are the specifications of the SIEMENS 5SJ42407HG42?

The SIEMENS 5SJ42407HG42 is a 40 A, C-Curve, 2-Pole miniature circuit breaker with a Max. AIR Rating of 10kA at 277/480V AC. It has an AC Voltage Rating of 277/480V AC, a DC Voltage Rating of 125V DC, and a Screw Clamp terminal connection. It is UL489 listed for DIN Rail mounting.

Where to buy the SIEMENS 5SJ42407HG42 worldwide?

You can source the SIEMENS 5SJ42407HG42 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 install the SIEMENS 5SJ42407HG42 on a DIN rail?

To install the SIEMENS 5SJ42407HG42, snap the breaker onto a standard 35 mm DIN rail until it locks. Ensure the circuit is de-energized, then connect wires to the Screw Clamp terminals using the specified torque. Follow Siemens guidelines and local electrical codes for proper installation and safety.

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
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