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Siemens 5SL4108-6 1-Pole B-Curve Miniature Circuit Breaker — 8A

Siemens 5SL4108-6 Miniature Circuit Breaker (MCB)

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ManufacturerSiemens

Part number5SL4108-6

Voltage 230/400V AC

Current 8A

Poles 1

Tripping Curve B

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CAGE: 9NK75

Single-Pole Protection B-Curve Tripping 10kA Breaking Capacity 8A Rating Sensitive Overcurrent Detection Compact Design

Product description

The Siemens 5SL4108-6 is a single-pole miniature circuit breaker designed for reliable protection against overcurrents. It features a B-curve tripping characteristic, which is suitable for circuits with low inrush currents, such as resistive loads and sensitive electronics. This breaker operates at 230/400V and has a breaking capacity of 10kA. It is rated for 8A.

This 1-pole breaker is commonly used in residential applications for protecting circuits like lighting, heating systems, and basic socket outlets where rapid tripping for low overcurrents is desired. Its B-curve ensures it trips quickly for faults, providing enhanced safety for sensitive equipment.

Stanlo Automation, a veteran-owned business, offers the Siemens 5SL4108-6 as part of our extensive selection of surplus industrial automation components. We are committed to providing high-quality parts and exceptional customer service. Choose Stanlo Automation for your sourcing needs and rely on our dependable products.

Technical specifications

Voltage	230/400V AC
Current	8A
Poles	1
Tripping Curve	B
Breaking Capacity	10kA
Manufacturer	Siemens
Series	5SL4

Common applications

Residential Lighting

Heating Systems

Resistive Loads

Sensitive Electronic Circuits

Control Circuits

Small Appliances

Compatible systems

Standard DIN rail mounting systems

Also known as

Siemens 5SL41086 Siemens MCB 8A 1P B

Replaces / compatible with

Suitable for circuits where fast response to low overcurrents is critical.

Technical note

Expert tip

The B-curve is ideal for protecting circuits with very low inrush currents, such as those found in instrumentation and control systems where false tripping must be avoided.

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Frequently asked questions

What makes the Siemens 5SL4108-6 suitable for sensitive circuits?

The Siemens 5SL4108-6 features a B-curve tripping characteristic. This means it trips at 3 to 5 times its rated current (8A), providing faster and more sensitive protection against overloads compared to C-curve breakers, making it ideal for sensitive electronic equipment.