The Siemens 5SL7240-8RC is a SENTRON 5SL7 miniature circuit breaker (MCB) designed to provide reliable protection against overload and short-circuit conditions in compatible electrical installations. This MCB features a 40 A rated current, 2-pole configuration, D tripping characteristic and 415 V AC rating. Siemens product references identify the 5SL7240-8RC as a 2-pole, 40 A, D-characteristic MCB for 415 V systems.
The Siemens 5SL7240-8RC 40A 2-pole MCB is suitable for circuits where a D tripping characteristic is required. D-characteristic MCBs are generally selected for applications where connected equipment can produce relatively high starting or inrush currents. This makes the device suitable for appropriately designed circuits associated with motors, transformers, inductive loads and selected industrial equipment.
The 2-pole configuration provides coordinated protection and switching for compatible two-pole circuits. It can be incorporated into electrical distribution boards, control panels, machinery panels, OEM equipment and other suitable electrical installations.
The 40 A rated current makes this MCB suitable for appropriately designed higher-current circuits. Proper coordination between the protective device, conductor capacity, connected load and upstream/downstream protection is essential for reliable circuit protection.
The product belongs to the Siemens SENTRON 5SL7 / Betagard MCB family, making it suitable for professional electrical distribution and protection applications. Available product information lists the device with a D curve, 2 poles and 40 A rating.
The Siemens 5SL7240-8RC 40A 2-pole D curve MCB can be considered for:
The Siemens 5SL7240-8RC provides dependable circuit protection for applications requiring a 40 A, 2-pole MCB with D characteristic. Its D tripping curve makes it suitable for selected electrical circuits where equipment may experience relatively high starting or inrush currents during normal operation.
This characteristic can be useful for appropriately designed motor, transformer and inductive-load circuits, where a standard lower-inrush tripping characteristic may not be suitable. Final selection should always be based on the actual load's starting current, conductor capacity and overall protection design.
The 2-pole construction provides coordinated protection and switching for compatible two-pole circuits. This makes the device convenient for electrical distribution boards, control cabinets, machinery panels and OEM electrical assemblies.
With a 40 A current rating, the 5SL7240-8RC can be used for suitably designed higher-current circuits. The protective-device rating should be coordinated with the cable size and connected load to provide effective circuit protection.
The 415 V AC rating makes the MCB suitable for compatible electrical systems and distribution applications. Product listings identify the 5SL7240-8RC as a 415 V AC, 2-pole, 40 A D-curve Siemens MCB.
The Siemens SENTRON 5SL7 series is suitable for professional electrical protection applications, making this MCB relevant for panel builders, OEMs, electrical contractors, system integrators and industrial maintenance teams.
The Siemens 40A 2P D curve 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, prospective short-circuit current, system voltage 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 5SL7240-8RC 40A 2P D characteristic MCB is suitable for customers looking for Siemens circuit protection products for industrial, commercial, machinery, automation 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 5SL7240-8RC?
It is a Siemens SENTRON 5SL7 miniature circuit breaker rated 40 A, 2-pole, D characteristic and 415 V AC.
2. What is the rated current?
The rated current is 40 A.
3. How many poles does this MCB have?
The 5SL7240-8RC is a 2-pole (2P) miniature circuit breaker.
4. What is the tripping characteristic?
It has a D tripping characteristic, generally selected for suitable circuits with relatively high starting or inrush currents.
5. What is the voltage rating?
The specified voltage is 415 V AC.
6. Where can this MCB be used?
It can be considered for suitable electrical distribution boards, industrial control panels, machinery, motor-related circuits, transformer applications, OEM equipment and commercial electrical installations.
7. What is the advantage of a 2-pole MCB?
A 2-pole MCB provides coordinated protection and switching for compatible two-pole circuits while maintaining a compact installation footprint.
8. Why choose a D-characteristic MCB?
A D-characteristic MCB can be suitable for selected loads that experience higher starting or inrush currents. Final selection should always be based on the actual equipment and complete electrical protection design.
• Ideal for distribution boards, control panels, and switchgear applications
| Parameter | Specification |
|---|---|
| Product Series | Siemens SENTRON 5SL7 |
| Part Number | 5SL7240-8RC |
| Product Type | Miniature Circuit Breaker (MCB) |
| Number of Poles | 2 Pole |
| Rated Current | 40A |
| Tripping Characteristic | D Curve |
| Rated Operational Voltage | 400V AC |
| Frequency | 50/60 Hz |
| Breaking Capacity | 15kA |
| Mounting Type | DIN Rail Mounting |
| Terminal Type | Screw Terminal |
| Protection Function | Overload & Short Circuit Protection |
| Housing Material | Industrial Grade Thermoplastic |
| Degree of Protection | IP20 |
| Standard Compliance | IEC 60898 / IEC 60947-2 |
| Mechanical Life | High Durability |
| Application | Distribution Boards, Industrial Panels, Commercial Electrical Systems |
| Country of Origin | India / Siemens Manufacturing Standard |
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