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Siemens 5SY4116-8 Miniature Circuit Breaker - 1-Pole, D Curve, 16A

Siemens 5SY4116-8 Miniature Circuit Breaker

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ManufacturerSiemens

Part number5SY4116-8

Manufacturer Siemens

Part Number 5SY4116-8

Type Miniature Circuit Breaker

Poles 1

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Single pole 10kA interrupting capacity Type D tripping characteristic 16A rated current 70mm modular width Handles high inrush currents

Product description

The Siemens 5SY4116-8 is a single-pole miniature circuit breaker featuring a Type D tripping characteristic and a 16A rated current. It operates at 230/400V with a standard 10kA breaking capacity. The Type D curve is designed to handle high inrush currents, making it suitable for protecting equipment with significant starting surges, such as large motors or transformers.

This circuit breaker is commonly used in industrial environments to protect circuits with high inductive loads that experience substantial inrush currents upon startup. Applications include motor control circuits, welding equipment, and large power supplies where nuisance tripping from normal startup surges must be avoided.

Stanlo Automation, a veteran-owned distributor of industrial automation surplus, provides the Siemens 5SY4116-8. We offer reliable components and expert service to meet your critical supply needs.

Technical specifications

Manufacturer	Siemens
Part Number	5SY4116-8
Type	Miniature Circuit Breaker
Poles	1
Rated Voltage	230/400 V
Breaking Capacity	10 kA
Tripping Characteristic	D
Rated Current	16 A
Width (D)	70 mm

Common applications

Motor Protection (large)

Transformer Protection

High Inductive Loads

Welding Equipment

Power Supplies

Industrial Machinery

Compatible systems

Standard DIN rail mounting

Also known as

Siemens 5SY4116-8 MCB 5SY4 MCB 16A D-curve Siemens 1-pole high inrush breaker

Replaces / compatible with

This 16A Type D circuit breaker is designed for applications with high inrush currents, compatible with Siemens 5SY4 series and suitable for replacing older high-surge protection breakers.

Technical note

Expert tip

The Type D curve on the 5SY4116-8 is essential for applications involving high-inertia loads or equipment with large power factor correction capacitors, where substantial temporary current draws are expected during operation.

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Frequently asked questions

What makes the Siemens 5SY4116-8 with a Type D curve suitable for industrial applications?

The Siemens 5SY4116-8 features a Type D tripping characteristic, which allows for very high inrush currents (typically 10-20 times the rated current) before tripping. This makes it ideal for protecting circuits powering large motors, transformers, and other equipment that experience significant starting surges, preventing nuisance tripping while still offering short-circuit protection.