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Siemens 5SJ4 Series C-Curve 1-Pole UL489 Miniature Circuit Breaker - C-Curve, 1-Pole UL489 DIN Rail-Mount Miniature Circuit Breakers
SiemensC-Curve, 1-Pole UL489 DIN Rail-Mount Miniature Circuit Breakers

Siemens 5SJ4 Series C-Curve 1-Pole UL489 Miniature Circuit Breaker

The SIEMENS IEC Miniature Circuit Breaker (SKU 5SJ41057HG40, MPN 5SJ41057HG40) is a C-Curve, 1-Pole UL489 DIN Rail-Mount device from the 5SJ4 series rated at 0.5 A. It supports 240V AC with a 14kA interrupting rating…

SKU 3G-OTH-22364

Brand
Siemens
Item
5SJ4 Series C-Curve 1-Pole UL489 Miniature Circuit Breaker
Part Number
5SJ41057HG40
Category
C-Curve, 1-Pole UL489 DIN Rail-Mount Miniature Circuit Breakers
Available to Order
Also known as:5SJ41057HG40Siemens
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

Siemens
Manufacturer Part Number
5SJ41057HG40
Series
5SJ4
Type
14kA at 240V AC, Screw Clamp, 5SJ4, AC/DC
DC
60V
Max. AIR Rating
14kA at 240V AC
AC Voltage Rating
240V 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 IEC Miniature Circuit Breaker (SKU 5SJ41057HG40, MPN 5SJ41057HG40) is a C-Curve, 1-Pole UL489 DIN Rail-Mount device from the 5SJ4 series rated at 0.5 A. It supports 240V AC with a 14kA interrupting rating and 60V DC, featuring screw-clamp terminals.

Frequently Asked Questions

What is the SIEMENS 5SJ41057HG40 miniature circuit breaker used for?

The SIEMENS 5SJ41057HG40 is a C-Curve, 1-pole UL489 DIN rail-mount miniature circuit breaker rated 0.5 A. It protects branch circuits in industrial control panels, HVAC equipment, and lighting systems against overloads and short circuits at 240V AC or 60V DC.

What are the specifications of the SIEMENS 5SJ41057HG40?

This SIEMENS 5SJ4 series breaker is rated 0.5 A, 240V AC with a 14kA interrupting rating, and 60V DC. It uses screw-clamp terminals and is a C-Curve, 1-pole UL489 device. The MPN is 5SJ41057HG40.

Where to buy the SIEMENS 5SJ41057HG40 worldwide?

3G Electric supplies the SIEMENS 5SJ41057HG40 miniature circuit breaker to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this 0.5 A, 240V AC/60V DC breaker.

How to install the SIEMENS 5SJ41057HG40 on a DIN rail?

Snap the SIEMENS 5SJ41057HG40 onto a standard 35 mm DIN rail until it locks. Connect line and load wires to the screw-clamp terminals, torquing to the manufacturer's specification. Ensure the breaker is off before wiring and verify the circuit is de-energized.

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
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Siemens Products

3G Electric supplies Siemens c-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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