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Siemens 5SL6120-7CC 1-Pole, C-Curve, 20A Miniature Circuit Breaker

Siemens 5SL6120-7CC 1-pole miniature circuit breaker, 20A, C-curve.

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ManufacturerSiemens

Part number5SL6120-7CC

Manufacturer Siemens

Part Number 5SL6120-7CC

Poles 1

Current Rating 20A

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Single pole protection C-curve tripping characteristic 6kA interrupting capacity 230/400V operational voltage Suitable for moderate inrush loads DIN rail mountable

Product description

The Siemens 5SL6120-7CC is a 1-pole miniature circuit breaker designed for robust overcurrent protection, featuring a 20A current rating. It operates at 230/400V with a 6kA breaking capacity and utilizes a C-curve tripping characteristic, suitable for circuits with moderate inrush currents.

This breaker is widely used in commercial and industrial electrical installations to protect circuits feeding higher-current loads, such as motors, transformers, and lighting systems where temporary surges are expected. The C-curve characteristic ensures it trips between 5 to 10 times its rated current, balancing protection with operational demands.

Stanlo Automation, a veteran-owned surplus parts distributor, specializes in providing essential industrial automation components. Source your Siemens 5SL6120-7CC and other critical parts from us, confident in our commitment to quality, value, and reliable service.

Technical specifications

Manufacturer	Siemens
Part Number	5SL6120-7CC
Poles	1
Current Rating	20A
Tripping Curve	C
Voltage Rating	230/400V
Breaking Capacity	6kA
Series	5SL6

Common applications

Motor circuits

Lighting distribution

Transformer protection

Commercial distribution boards

Industrial control panels

Heavy duty socket outlets

Compatible systems

Standard 35mm DIN rail mounting Industrial and commercial distribution systems

Also known as

Siemens 5SL6 20A C-curve breaker Siemens miniature circuit breaker 5SL6120-7CC 1-pole C-curve 20A MCB

Replaces / compatible with

Directly replaces Siemens 5SL6 series breakers with a 20A rating and C-curve characteristic, ideal for circuits requiring protection against overloads and short circuits with moderate inrush.

Technical note

Expert tip

The 5SL6120-7CC's C-curve is well-suited for protecting circuits with moderate inductive loads, such as those powering larger lighting arrays or small machinery, where startup currents are higher than resistive loads.

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Frequently asked questions

What is the breaking capacity of the Siemens 5SL6120-7CC and what does it mean?

The Siemens 5SL6120-7CC has a breaking capacity of 6kA (kiloamperes). This indicates the maximum fault current the breaker can safely interrupt without being destroyed, ensuring protection for the circuit and connected equipment during a short circuit.