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Siemens 5SY7416-8 Miniature Circuit Breaker: 4-Pole, 16A, D-Curve

Siemens 5SY7416-8 4-Pole Miniature Circuit Breaker, 16A

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ManufacturerSiemens

Part number5SY7416-8

Voltage 400V

Breaking Capacity 15kA

Poles 4

Curve Type D

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4-pole protection 15kA interrupting capacity Type D tripping characteristic 400V operational voltage 16A current handling

Product description

The Siemens 5SY7416-8 is a 4-pole miniature circuit breaker designed for comprehensive protection of four-conductor circuits. It operates at 400V with a 15kA breaking capacity. This model features a Type D tripping characteristic, making it suitable for loads with high inrush currents like motors, and has a 16A current rating.

This 4-pole breaker is commonly used in industrial settings for protecting three-phase circuits with a neutral conductor, especially those powering equipment with significant starting surges. It ensures reliable operation and safety for both the conductors and the connected machinery.

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Technical specifications

Voltage	400V
Breaking Capacity	15kA
Poles	4
Curve Type	D
Current Rating	16A
Width	70mm

Common applications

Three-phase motor circuits with neutral

Industrial machinery

Power distribution

High inrush current applications

Manufacturing equipment

Compatible systems

Standard DIN rail mounting systems

Also known as

Siemens 5SY7416-8 MCB Siemens 16A 4-pole breaker 5SY7 series breaker

Replaces / compatible with

This 4-pole Type D circuit breaker is a suitable replacement for other Siemens 4-pole miniature circuit breakers with similar electrical specifications. Verify compatibility through official Siemens documentation.

Technical note

Expert tip

Ensure the neutral conductor is correctly terminated and protected within the 4-pole configuration, especially when dealing with potential imbalances in a 3-phase system.

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Frequently asked questions

When would a 4-pole Type D breaker like the Siemens 5SY7416-8 be preferred over a Type C for industrial use?

A 4-pole Type D breaker like the Siemens 5SY7416-8 is preferred for industrial use when protecting three-phase circuits with a neutral conductor powering equipment that has high inrush currents. This includes larger motors or transformers that draw a significantly higher current for a brief period upon startup. The Type D curve allows for these surges without tripping, while still providing short-circuit protection, unlike a Type C which might trip prematurely.