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Siemens 5SY4220-7 Miniature Circuit Breaker — 2-Pole, Type C, 20A

Siemens 5SY4220-7 2-pole miniature circuit breaker.

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ManufacturerSiemens

Part number5SY4220-7

Rated Voltage 400V AC

Breaking Capacity 10kA

Poles 2

Tripping Characteristic Type C

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2-pole protection Type C tripping curve for inductive loads 10kA breaking capacity 400V AC rating 70mm standard depth Siemens reliability

Product description

The Siemens 5SY4220-7 is a 2-pole miniature circuit breaker featuring a Type C tripping characteristic, making it suitable for loads with moderate inrush currents. It operates at a rated voltage of 400V AC with a significant breaking capacity of 10kA. This model is rated for 20A and has a standard depth of 70mm.

This circuit breaker is ideal for applications where inductive loads, such as motors or transformers, are present. It provides reliable protection against overloads and short circuits in residential, commercial, and industrial electrical installations, including control systems and power distribution units.

Stanlo Automation, your trusted veteran-owned source for surplus industrial automation parts, offers the Siemens 5SY4220-7. We help you find the right components to keep your operations running smoothly, providing a cost-effective solution for your automation needs.

Technical specifications

Rated Voltage	400V AC
Breaking Capacity	10kA
Poles	2
Tripping Characteristic	Type C
Rated Current	20A
Depth	70mm
Series	5SY4

Common applications

Motor protection

Inductive load circuits

Industrial automation

Commercial buildings

Power distribution

Control panels

Compatible systems

Standard DIN rail mounting Siemens electrical distribution systems

Also known as

Siemens 5SY4220-7 MCB Siemens 20A Type C breaker 5SY4 Type C 20A

Replaces / compatible with

The Siemens 5SY4220-7 serves as a direct replacement for other Siemens miniature circuit breakers within the 5SY4 series that have identical electrical and physical specifications. It is compatible with standard DIN rail mounting hardware.

Technical note

Expert tip

The Type C characteristic is recommended for circuits where the expected inrush current is typically 5 to 10 times the rated current.

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Frequently asked questions

What type of loads is the Siemens 5SY4220-7 circuit breaker best suited for?

The Siemens 5SY4220-7 features a Type C tripping characteristic, which is designed to handle moderate inrush currents commonly associated with inductive loads. This makes it ideal for protecting motors, transformers, and other equipment that may experience temporary current surges upon startup.