5SJ4203-8HG42 The Siemens 5SJ4203-8HG42 is a 2-pole miniature circuit breaker with a D-type tripping characteristic. It offers a 3A operational current and a 10kA switching capacity.
Mfr Part #:

5SJ4203-8HG42

Mfr Name: Siemens
Siemens
The Siemens 5SJ4203-8HG42 is a 2-pole miniature circuit breaker with a D-type tripping characteristic. It offers a 3A operational current and a 10kA switching capacity.
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5SJ4203-8HG42 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Actuator Type
Approval Agency
Current Rating (Amps)
Depth
Halogen Free
Height
Illumination
Mounting Type
Number of Poles
Supply Voltage
Voltage Rating
Width

5SJ4203-8HG42 Description

Short technical summary and product information.

This Siemens 5SJ4203-8HG42 is a 2-pole miniature circuit breaker designed for industrial and mechanical engineering applications. It features a D-type tripping characteristic and a rated operational current of 3A at 30°C, with a switching capacity of 10kA according to EN 60898.

 

The circuit breaker operates with AC/DC voltage and has an insulation voltage of 440V AC. It is suitable for a supply voltage of 400V AC at 50Hz and offers various operating voltage limits for AC and DC applications, including up to 277V AC according to UL 489.

 

Designed for DIN rail mounting, this device has a protection class of IP20 with connected conductors and IP40 in the handle range. It is halogen-free, sealable, and silicon-free, contributing to its suitability for demanding environments. The mechanical service life is rated for a typical 10,000 switching cycles.

5SJ4203-8HG42 Quick Information

Product Type: Miniature Circuit Breaker
Series: 5SJ4
Canonical Name: Siemens 5SJ4 Miniature Circuit Breaker, 2-Pole, D-Type, 3A, 10kA
Subcategory: MCB

5SJ4203-8HG42 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

5SJ4203-8HG42 Features

  • 2-pole miniature circuit breaker with D-type tripping.
  • 3A operational current at 30°C.
  • 10kA switching capacity according to EN 60898.
  • Suitable for AC/DC voltage operation.
  • Halogen-free and silicon-free construction.

5SJ4203-8HG42 Applications

  • Ideal for industrial control panels.
  • Used in mechanical engineering applications.
  • Suitable for power distribution systems.
  • Protects circuits against overloads.
  • Provides short-circuit protection.

5SJ4203-8HG42 FAQs

6 frequently asked questions generated from this part’s specifications.
What is the operating voltage of the Siemens 5SJ4203-8HG42?

The operating voltage is 277V AC maximum (UL 489) and 60V DC maximum (single channel) or 125V DC (2-channel).

What is the breaking capacity of this MCB?

The breaking capacity is 10kA according to EN 60898 and 15kA according to IEC 60947-2.

How is the Siemens 5SJ4203-8HG42 mounted?

It mounts on a standard DIN rail in any position.

What are the dimensions of this circuit breaker?

Height 121mm, width 36mm, depth 70mm.

What certifications does the 5SJ4203-8HG42 have?

It is certified by CCC, CE, CSA, EAC, UL, and VDE.

What is the tripping characteristic of this MCB?

It has a D-tripping characteristic, designed for high inrush currents.

5SJ4203-8HG42 Alternate Parts

Same form/fit/function or matching attribute configuration across different manufacturers.
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5SJ4203-7HG42
5SJ4203-7HG42
Siemens
The Siemens 5SJ4203-7HG42 is a 2-pole miniature circuit breaker rated for 3A and a 10kA switching capacity. It is designed for industrial and mechanical engineering applications.
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