The Siemens 5SL4240-0RC is a SENTRON 5SL4 miniature circuit breaker (MCB) designed to provide reliable protection against overload and short-circuit conditions in suitable electrical installations. This MCB features a 40 A rated current, 2-pole configuration, Z tripping characteristic and 10 kA short-circuit breaking capacity, making it suitable for appropriately designed industrial, commercial and electrical protection applications.
The Siemens 5SL4240-0RC 40A 2-pole MCB is intended for circuits where a Z tripping characteristic is required. Compared with commonly used B- and C-characteristic MCBs, a Z characteristic is generally selected for applications requiring a more sensitive response to overcurrent conditions. This can make the device suitable for selected electronic equipment, control circuits and sensitive electrical loads, subject to the actual protection requirements.
The 2-pole configuration provides coordinated protection and switching for compatible two-pole electrical circuits. The MCB can be integrated into electrical distribution boards, industrial control panels, automation cabinets, machinery panels, OEM electrical assemblies and suitable commercial installations.
With a 40 A rated current, the 5SL4240-0RC is suitable for appropriately designed medium-to-high current circuits. The connected load, conductor capacity, operating conditions and coordination with upstream and downstream protective devices should be verified during product selection.
The 10 kA short-circuit breaking capacity provides the specified fault-interruption capability for suitable installations. The prospective short-circuit current at the installation point should always be evaluated before installation to confirm that the MCB is appropriately rated for the electrical system.
As part of the Siemens SENTRON 5SL4 series, the 5SL4240-0RC provides a compact modular circuit protection solution for professional electrical installations. It can be considered by panel builders, OEMs, electrical contractors, system integrators, automation professionals and industrial maintenance teams.
The Siemens 5SL4240-0RC 40A 2-pole Z curve MCB can be considered for:
The Siemens 5SL4240-0RC provides dependable circuit protection for applications requiring a 40 A, 2-pole MCB with Z characteristic and 10 kA breaking capacity. Its Z tripping characteristic makes it suitable for selected applications where a comparatively sensitive response to overcurrent conditions is required.
The Z characteristic can be useful for certain electronic and control circuits where rapid response to relatively low overcurrent conditions is desirable. This characteristic should be selected carefully because sensitive tripping can also make the device unsuitable for loads with normal starting or inrush currents unless the complete system design supports it.
The 2-pole construction provides coordinated protection and switching for compatible two-pole circuits. This makes the MCB suitable for electrical distribution boards, industrial control cabinets, automation panels, machinery systems and OEM electrical assemblies.
The 40 A rated current makes the 5SL4240-0RC suitable for appropriately designed medium-to-high current circuits. Proper coordination between the MCB rating, conductor capacity, connected equipment and other protective devices is essential for effective protection.
The 10 kA breaking capacity provides the specified capability to interrupt suitable short-circuit fault currents within the applicable device ratings. The prospective short-circuit current should always be checked to confirm that the MCB is appropriate for the intended installation.
The compact Siemens SENTRON 5SL4 design supports organized installation in professional electrical panels and distribution assemblies. The 5SL4240-0RC can be considered for industrial automation, electronic equipment, OEM machinery, control systems and electrical distribution applications.
The Siemens 40A 2P Z curve 10 kA MCB can be considered for suitable projects across Faridabad, Delhi NCR, Noida, Gurgaon/Gurugram, Ghaziabad, Punjab, Mumbai, Pune, Ahmedabad, Hyderabad, Bengaluru/Bangalore, Chennai, Kolkata, Jaipur, Chandigarh, Ludhiana and other major industrial and commercial locations across India.
Always verify the connected load, conductor rating, system voltage, prospective short-circuit current and coordination with upstream and downstream protective devices before installation.
SB Smart supplies Siemens industrial electrical, automation and circuit protection products for OEMs, panel builders, electrical contractors, system integrators and industrial maintenance teams across India.
The Siemens 5SL4240-0RC 40A 2P Z characteristic 10 kA MCB is suitable for customers looking for Siemens circuit protection products for industrial control, automation, electronic equipment, machinery, OEM panels and electrical distribution applications.
SB Smart supports sourcing requirements across Faridabad, Delhi NCR, Noida, Gurgaon/Gurugram, Mumbai, Pune, Ahmedabad, Hyderabad, Bengaluru/Bangalore, Chennai, Kolkata, Chandigarh, Ludhiana and other major Indian industrial markets.
1. What is Siemens 5SL4240-0RC?
It is a Siemens SENTRON 5SL4 miniature circuit breaker rated 40 A, 2-pole, Z characteristic and 10 kA breaking capacity.
2. What is the rated current?
The rated current is 40 A.
3. How many poles does this MCB have?
The 5SL4240-0RC is a 2-pole (2P) miniature circuit breaker.
4. What is the tripping characteristic?
It has a Z tripping characteristic, generally selected for applications requiring a more sensitive overcurrent response.
5. What is the breaking capacity?
The specified short-circuit breaking capacity is 10 kA.
6. Where can the Siemens 5SL4240-0RC be used?
It can be considered for suitable industrial control panels, automation systems, electronic equipment, OEM electrical assemblies, machinery and electrical distribution applications.
7. What is the advantage of a Z-characteristic MCB?
A Z-characteristic MCB is generally selected for applications requiring sensitive overcurrent protection, including certain electronic and control circuits. Final selection should always be based on the actual equipment and complete protection design.
Technical Specifications
|
Parameter |
Specification |
|
Product Model |
5SL4240-7RC |
|
Brand |
Siemens |
|
Series |
SENTRON 5SL |
|
Type |
Miniature Circuit Breaker (MCB) |
|
Number of Poles |
2 Pole |
|
Rated Current |
40 A |
|
Rated Voltage |
240/415 V AC |
|
Frequency |
50/60 Hz |
|
Tripping Characteristic |
Curve C |
|
Breaking Capacity |
10 kA |
|
Insulation Voltage (Ui) |
440 V |
|
Impulse Withstand Voltage (Uimp) |
4 kV |
|
Energy Limitation Class |
3 |
|
Mounting Type |
DIN Rail |
|
Protection Class |
IP20 |
|
Mechanical Life |
10,000 operations |
|
Electrical Life |
4,000 operations |
|
Operating Temperature |
-25°C to +55°C |
|
Terminal Capacity |
0.75–25 mm² |
|
Standards |
IEC/EN 60898-1 |
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