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Siemens SENTRON 5SY4320-6 3-Pole B Curve Miniature Circuit Breaker

Siemens 5SY4320-6 3-pole miniature circuit breaker.

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ManufacturerSiemens

Part number5SY4320-6

Voltage 400V AC

Current 20A

Poles 3

Tripping Characteristic B

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Veteran-owned

CAGE: 9NK75

3-pole design Type B tripping curve 10kA breaking capacity DIN rail mountable Overload and short-circuit protection Reliable Siemens quality

Product description

The Siemens 5SY4320-6 is a 3-pole miniature circuit breaker from the SENTRON 5SY4 series. It is designed for reliable short-circuit and overload protection, operating at 400V with a 10kA breaking capacity and a Type B tripping characteristic. This breaker is suitable for a wide range of applications, from residential buildings to industrial facilities.

Commonly used in electrical distribution systems, control panels, and machinery, the 5SY4320-6 provides essential safety for circuits that may experience sudden load changes or require specific tripping behavior for sensitive equipment. Its robust design ensures consistent performance and longevity in demanding environments.

Sourced from a veteran-owned business, Stanlo Automation offers this Siemens circuit breaker with a commitment to quality and customer satisfaction. We ensure genuine parts and reliable service, making us your trusted partner for industrial automation surplus.

Technical specifications

Voltage	400V AC
Current	20A
Poles	3
Tripping Characteristic	B
Breaking Capacity	10kA
Series	5SY4
Mounting	DIN Rail

Common applications

Residential distribution

Commercial buildings

Industrial control panels

Machine tools

HVAC systems

Lighting circuits

Compatible systems

Standard DIN rail mounting systems

Also known as

Siemens 5SY43206 SENTRON 5SY4 B20 3P MCB 20A B

Replaces / compatible with

Compatible with Siemens SENTRON 5SY series accessories.

Technical note

Expert tip

The 5SY4 series breakers offer a width of 3 modules (54mm), making them suitable for standard distribution boards.

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Frequently asked questions

What is the tripping characteristic of the Siemens 5SY4320-6?

The Siemens 5SY4320-6 features a Type B tripping characteristic. This curve is designed for circuits with low inrush currents, such as those found in European residential installations or for protecting sensitive electronic equipment.