Home › Manufacturers › Siemens › 5SM3648-0

Siemens

Siemens 5SM3645-0 4-Pole Type AC Residual Current Circuit Breaker

Siemens 5SM3645-0 4-pole Type AC Residual Current Circuit Breaker.

● In Stock 12-Mo Warranty Same-Day Dispatch Ships Worldwide 🎖 Veteran-Owned

In Stock — Ready to Ship

ManufacturerSiemens

Part number5SM3648-0

Poles 4

Type AC

Rated current (In) 125 A

Rated residual current (IΔn) 300 mA

Get a price for 5SM3648-0

Response within 1 business hour

🛡

12-month warranty

All units tested

⚡

Same-day dispatch

Order by 2pm CST

🌐

Worldwide delivery

US, EU, Asia, Middle East

🎖

Veteran-owned

CAGE: 9NK75

4-pole design Type AC tripping 125A current rating 300mA sensitivity 400V AC operational voltage DIN rail mountable

Product description

The Siemens 5SM3645-0 is a 4-pole Residual Current Operated Circuit Breaker (RCCB) featuring a Type AC tripping characteristic. It is designed for industrial and commercial applications requiring protection against indirect contact, with a high rated current of 125 A, a rated residual current of 300 mA, and an operational voltage of 400 V AC. This device serves as a crucial safety component for preventing electric shocks and fire hazards.

This 4-pole RCCB is suitable for protecting circuits with higher current loads where general protection against earth faults is needed. Applications include main distribution boards, motor circuits, and industrial equipment where protection against sinusoidal AC earth leakages is required.

Stanlo Automation, a veteran-owned surplus parts distributor, offers reliable access to essential industrial components. The Siemens 5SM3645-0 is an example of the quality surplus we provide to minimize downtime and ensure the safety of your electrical systems. Partner with Stanlo for your critical automation needs.

Technical specifications

Poles	4
Type	AC
Rated current (In)	125 A
Rated residual current (IΔn)	300 mA
Rated operational voltage (Un AC)	400 V
Frequency	50/60 Hz
Breaking capacity (Icn)	10 kA
Mounting	DIN rail

Common applications

Industrial distribution boards

Motor protection

Heavy machinery circuits

Commercial installations

Protection against earth faults

General electrical safety

Compatible systems

Standard DIN rail mounting AC power distribution systems

Also known as

Siemens 5SM3645-0 RCCB Siemens 125A 4P Type AC breaker Siemens 400V RCD

Replaces / compatible with

This 4-pole Type AC RCCB is designed for higher current applications and general earth fault protection. It can replace older Siemens or compatible 4-pole RCCBs with similar voltage and current ratings.

Technical note

Expert tip

Type AC RCCBs are less sensitive to pulsating DC fault currents compared to Type A or Type F. Ensure this type is appropriate for the specific electrical load and potential fault conditions.

What happens next?

Email confirmation

Immediate receipt acknowledgment sent to you

Account manager assigned

Confirms your part's spec and condition

Your quote delivered

Tailored to your specific requirements

Frequently asked questions

What is the main application for a Type AC residual current circuit breaker like the 5SM3645-0?

The Siemens 5SM3645-0, being a Type AC RCCB, is primarily designed to detect sinusoidal alternating current (AC) residual currents. It is suitable for protecting circuits where the risk of earth faults involves only AC leakage, commonly found in standard lighting and power circuits in residential and commercial settings, but less effective against pulsating DC currents found in some electronic devices.