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Siemens 5SM3646-6 Residual Current Operated Circuit Breaker - 63A, 300mA

Siemens 5SM3646-6 4-Pole Residual Current Circuit Breaker.

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ManufacturerSiemens

Part number5SM3646-6

Type Residual Current Operated Circuit Breaker (RCD)

Manufacturer Siemens

Poles 4

Rated Current (In) 63 A

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4-pole design 63A rated current 300mA residual current sensitivity Type A protection 400V AC operational voltage DIN rail mountable

Product description

The Siemens 5SM3646-6 is a 4-pole Residual Current Operated Circuit Breaker (RCD) designed for enhanced electrical safety. It offers a rated current of 63 A and a residual current sensitivity of 300 mA, suitable for protecting circuits against earth faults. The RCD operates at a voltage of 400 V AC and is classified as Type A, providing protection against both AC and pulsating DC residual currents.

This RCD is essential for ensuring safety in electrical installations across various sectors, including commercial buildings, industrial facilities, and residential applications. It helps prevent electric shocks and fires by quickly disconnecting power when a dangerous current leak to earth is detected.

Stanlo Automation, a veteran-owned distributor of surplus industrial automation parts, stocks the Siemens 5SM3646-6. We offer reliable sourcing for safety components like RCDs, helping you maintain code compliance and operational security.

Technical specifications

Type	Residual Current Operated Circuit Breaker (RCD)
Manufacturer	Siemens
Poles	4
Rated Current (In)	63 A
Residual Current Sensitivity (IΔn)	300 mA
Rated Voltage (Un AC)	400 V
Type of Residual Current	Type A
Breaking Capacity	Not specified
Mounting	DIN Rail

Common applications

Electrical safety

Earth fault protection

Personnel protection

Fire prevention

Industrial installations

Commercial buildings

Compatible systems

Compatible with standard 400V AC electrical distribution systems and enclosures designed for DIN rail mounting.

Also known as

Siemens 4-pole RCD 63A Residual Current Breaker 5SM3646 300mA earth leakage protector

Replaces / compatible with

This 4-pole RCD is designed to provide essential residual current protection in electrical distribution systems. It serves as a direct replacement for existing 63A, 300mA, 4-pole Type A RCDs.

Technical note

Expert tip

Ensure correct wiring of all four poles for effective operation and protection. The 300mA tripping current is suitable for general purpose and personnel protection.

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Frequently asked questions

What type of residual currents does the Siemens 5SM3646-6 RCD protect against?

The Siemens 5SM3646-6 RCD is a Type A device, meaning it provides protection against alternating current (AC) and pulsating direct current (DC) residual currents. This offers broader protection compared to Type AC devices.