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Siemens 5SJ4111-8HG41 1-Pole 5A D-Curve MCB

Siemens 5SJ4111-8HG41 1-pole, 5A, D-curve miniature circuit breaker.

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ManufacturerSiemens

Part number5SJ4111-8HG41

Poles 1

Current Rating 5A

Breaking Capacity 14kA

Curve Type D

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14kA interrupting capacity D-curve for high inrush currents 5A rated current UL 489 compliant 70mm width Motor and transformer protection

Product description

The Siemens 5SJ4111-8HG41 is a 1-pole miniature circuit breaker featuring a D-curve tripping characteristic, which is ideal for circuits with high inrush currents. It has a rated current of 5 A, a breaking capacity of 14 kA, and is rated for 240V AC, meeting UL 489 standards. The breaker is 70mm wide.

This circuit breaker is specifically designed to protect electrical circuits with inductive loads, such as motors, transformers, and solenoids, that experience significant current surges during startup. The D-curve ensures reliable operation by allowing these temporary surges while still providing protection against sustained overloads and short circuits. It is commonly used in industrial and machine building applications.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 5SJ4111-8HG41. We provide dependable, high-quality surplus automation components to help you maintain your equipment and minimize downtime, all while offering competitive pricing.

Technical specifications

Poles	1
Current Rating	5A
Breaking Capacity	14kA
Curve Type	D
Voltage Rating	240V AC
Standard	UL 489
Width	70mm

Common applications

Motor control circuits

Transformer protection

Solenoid circuits

Machine tool applications

Industrial automation

Power distribution

Compatible systems

UL 489 rated systems up to 240V AC, suitable for inductive loads

Also known as

Siemens 5SJ4 D-curve 5SJ4 Series 5A D Siemens miniature breaker D

Replaces / compatible with

This part is a Siemens 5SJ4 series circuit breaker and is generally compatible with other Siemens miniature circuit breakers of similar specifications and physical dimensions within the same series.

Technical note

Expert tip

The 70mm width (D=70 mm) of the 5SJ4111-8HG41 makes it a direct replacement for similar breakers in standard panel installations.

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Frequently asked questions

When should I use a D-curve breaker like the Siemens 5SJ4111-8HG41?

A D-curve breaker like the 5SJ4111-8HG41 is recommended for circuits with high inrush currents, such as those powering motors, transformers, or solenoid valves. It allows for these momentary surges without tripping, while still protecting against overloads and short circuits.