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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 5SM3644-4 |
| Alternative Part Number | 5SM36444 |
| Manufacturer | Siemens |
| Type | Residual Circuit Breaker |
| Rated Voltage | 400 V ac |
| Rated Current | 40 A |
| Number of Poles | 4 Pole |
| Short-Circuit Current Rating | 10 kA |
| Tripping Characteristic | Type B |
| Dimensions | 71.9 x 70.4 x 90.4 mm |
| Mounting Type | DIN Rail (REG) |
| Mounting Position | Any |
| Net Weight | 543 g |
| Ambient Temperature Range | -25 to +45 °C (operating), -40 to +75 °C (storage) |
| Mechanical Operating Cycles | Typically 10,000 |
| Overvoltage Category | III |
| Tightening Torque | 2.5 to 3 N·m |
| Conductor Connection Cross-Section | Solid: 1.5 to 25 mm², Stranded: 1.5 to 25 mm² |
| Product Features | Silicon-free, Halogen-free |
| Degree of Protection | IP20 |
| Rated Frequency | 50 to 60 Hz |
| Resistance to Impulse Current | Rated at 3 kA |
| Selectivity | Non-selective |
| Environmental Testing | 28 cycles in accordance with IEC 60068-2-30 |
| Approvals and Certifications | General Product Approval, Declaration of Conformity, Environmental Confirmations |
The Siemens 5SM3644-4 is a robust residual circuit breaker designed to provide superior protection in electrical circuits. Engineered for reliability, this 400 V ac, 40 A, 4-pole device is capable of handling a 10 kA short-circuit current, making it an ideal choice for a wide range of industrial and commercial applications. Its Type B sensitivity to universal currents ensures it can detect both pulsating direct and alternating residual currents, offering enhanced safety against electrical faults.
With a compact form factor measuring 71.9 x 70.4 x 90.4 mm, the Siemens 5SM3644-4 can be easily integrated into electrical installations without taking up excessive space. The unit is designed for any mounting position, providing flexibility in installation. It features a short-time delayed response, which helps to prevent nuisance tripping while still offering effective protection.
The device is constructed to withstand impulse currents up to 3 kA and operates reliably within an ambient temperature range of -25 to +45 degrees Celsius, ensuring consistent performance even in challenging environments. The circuit breaker is also halogen-free, contributing to a safer and more environmentally friendly operation.
With a mechanical operating life of approximately 10,000 cycles, the Siemens 5SM3644-4 is built to last, offering a dependable solution for circuit protection. Its finger and back-of-hand safe design ensure additional safety during installation and maintenance.
Overall, the Siemens 5SM3644-4 residual circuit breaker is a high-quality protective device that combines performance, durability, and safety, making it a valuable addition to any electrical system requiring reliable fault protection.
Commonly Asked Questions
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Frequently Asked Questions
What is the voltage rating for this residual circuit breaker?
The residual circuit breaker is rated for 400 V ac.
Can you specify the current rating of this device?
This device has a current rating of 40 A.
How many poles does this circuit breaker have?
The circuit breaker is a 4-pole device.
What type of residual current does this breaker detect?
It is a Type B residual circuit breaker, sensitive to universal currents.
What are the dimensions of this circuit breaker?
The dimensions are 71.9 mm in height, 70.4 mm in depth, and 90.4 mm in width.
What is the short-circuit current rating for this breaker?
The short-circuit current rating is 10 kA.
Is this circuit breaker suitable for any mounting position?
Yes, it can be mounted in any position.
What is the tripping characteristic of this breaker?
This breaker has a short-time delayed tripping characteristic.
Is the device halogen-free?
Yes, the device is halogen-free.
What is the mechanical operating life of this circuit breaker?
The mechanical operating life is typically 10,000 cycles.
What is the ambient temperature range for operating this breaker?
The operating ambient temperature range is from -25 °C to +45 °C.
Can this breaker be used with supplementary devices?
Yes, supplementary devices can be installed with this breaker.
What is the protection class of this circuit breaker?
The protection class is IP20 when installed in a distribution board with connected conductors.
What is the permissible impulse withstand current for this device?
The permissible impulse withstand current is 3 kA.
What conductor cross-sections can be connected to this breaker?
Conductor cross-sections from 1.5 mm² to 25 mm² can be connected to this breaker.
