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Siemens Miniature Circuit Breaker: 0.3 A Amps, 60V DC, 10 kA, Screw Clamp, 5SJ4 - D-Curve, 1-Pole UL489 DIN Rail-Mount Miniature Circuit Breakers
SiemensD-Curve, 1-Pole UL489 DIN Rail-Mount Miniature Circuit Breakers

Siemens Miniature Circuit Breaker: 0.3 A Amps, 60V DC, 10 kA, Screw Clamp, 5SJ4

The SIEMENS Miniature Circuit Breaker (SKU 30YC64, MPN 5SJ41148HG42) is a D-Curve, 1-Pole UL489 DIN Rail-Mount unit rated at 0.3 A Amps. It carries a Max. AIR Rating of 10 kA, with AC Voltage Rating of 277/480V AC…

SKU 3G-OTH-22104

Brand
Siemens
Item
Miniature Circuit Breaker: 0.3 A Amps, 60V DC, 10 kA, Screw Clamp, 5SJ4
Category
D-Curve, 1-Pole UL489 DIN Rail-Mount Miniature Circuit Breakers
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Technical Specifications

Siemens
Manufacturer Part Number
5SJ41148HG42
Type
10 kA, Screw Clamp, 5SJ4, AC/DC
AC
277/480V
DC
60V
Max. AIR Rating
10 kA
AC Voltage Rating
277/480V AC
DC Voltage Rating
60V DC
Terminal Connection
Screw Clamp
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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SIEMENS Miniature Circuit Breaker (SKU 30YC64, MPN 5SJ41148HG42) is a D-Curve, 1-Pole UL489 DIN Rail-Mount unit rated at 0.3 A Amps. It carries a Max. AIR Rating of 10 kA, with AC Voltage Rating of 277/480V AC and DC Voltage Rating of 60V DC. The terminal connection is a Screw Clamp.

Frequently Asked Questions

What is the SIEMENS 5SJ4118HG42 miniature circuit breaker used for?

The SIEMENS 5SJ4118HG42 is a D-Curve, 1-Pole UL489 DIN Rail-Mount miniature circuit breaker rated at 0.3 A. It protects branch circuits in industrial control panels, HVAC equipment, and DC power systems where high inrush currents occur, such as motor or transformer loads.

What are the specifications of the SIEMENS 5SJ4118HG42?

The SIEMENS 5SJ4118HG42 (MPN 5SJ41148HG42) is a 0.3 A, 1-Pole D-Curve miniature circuit breaker. It has a Max. AIR Rating of 10 kA, AC Voltage Rating of 277/480V AC, DC Voltage Rating of 60V DC, and a Screw Clamp terminal connection. It is UL489 listed for DIN Rail mounting.

Where to buy the SIEMENS 5SJ4118HG42 worldwide?

3G Electric supplies the SIEMENS 5SJ4118HG42 miniature circuit breaker worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time; we source and deliver this Siemens breaker to any country.

How to install a SIEMENS 5SJ4 series miniature circuit breaker?

Install the SIEMENS 5SJ4 breaker by snapping it onto a standard 35 mm DIN rail. Ensure the circuit is de-energized. Connect wires to the Screw Clamp terminals per the torque rating on the label. For D-Curve breakers, verify the load's inrush current does not exceed the magnetic trip threshold.

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, 1-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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