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Siemens 5SV3644-4 4-Pole Type B RCCB - Short-Time Delayed

Siemens 5SV3644-4: 4-pole Type B, short-time delayed RCCB.

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ManufacturerSiemens

Part number5SV3644-4

Poles 4

Type B

Rated Current (In) 40 A

Residual Current (IΔn) 300 mA

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4-pole configuration Type B RCD (detects AC, pulsating DC, smooth DC) 40A current rating 300mA sensitivity Short-time delayed SIGRES for harsh conditions

Product description

The Siemens 5SV3644-4 is a 4-pole, type B residual current operated circuit breaker (RCCB) with short-time delay and SIGRES functionality. It features a rated current of 40 A, a residual current sensitivity of 300 mA, and a rated operational voltage of 400 V AC. Type B RCCBs are designed to detect AC, pulsating DC, and smooth DC residual currents, offering broader protection.

This specialized RCCB is ideal for applications with potential DC components in the fault current, such as variable speed drives, EV charging stations, or medical equipment. The short-time delay minimizes nuisance tripping from transient currents, while SIGRES ensures reliability in harsh conditions.

Stanlo Automation, a veteran-owned surplus distributor, offers the Siemens 5SV3644-4. We provide advanced and reliable automation components to meet demanding industrial applications and ensure operational safety.

Technical specifications

Poles	4
Type	B
Rated Current (In)	40 A
Residual Current (IΔn)	300 mA
Rated Operational Voltage (Un AC)	400 V
Feature	Short-time-delayed, SIGRES (harsh ambient conditions)

Common applications

EV charging stations

Variable speed drives

Medical equipment

Industrial machinery with DC components

Harsh industrial environments

Compatible systems

400V AC 3-phase power systems with potential DC fault currents

Also known as

Siemens Type B RCCB, 4-pole 300mA breaker, SIGRES RCCB

Replaces / compatible with

Designed as an advanced alternative for Type A or Type AC RCCBs in applications with potential DC fault currents. Compatible with Siemens 5SV3 series accessories.

Technical note

Expert tip

When using this Type B RCCB with variable speed drives or similar equipment, ensure the short-time delay setting is appropriate to avoid nuisance tripping from normal operation.

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Frequently asked questions

What makes the Siemens 5SV3644-4 a Type B residual current circuit breaker?

The Siemens 5SV3644-4 is a Type B RCCB, meaning it can detect not only AC residual currents but also pulsating DC and smooth DC residual currents. This offers a higher level of protection required for modern equipment like EV chargers and variable speed drives.