Product Description

Siemens 5SL7420-8RC MCB 20A 4-Pole D Characteristic 15kA

The Siemens 5SL7420-8RC is a SENTRON 5SL7 miniature circuit breaker (MCB) designed to provide dependable protection against overload and short-circuit conditions in electrical installations. This Siemens MCB features a 20 A rated current, 4-pole configuration, D tripping characteristic, 415 V rated voltage and 15 kA short-circuit breaking capacity, making it suitable for selected industrial, commercial and electrical distribution applications.

The Siemens 5SL7420-8RC 20A 4-pole MCB is designed for circuits where reliable overcurrent protection is required and where connected equipment may experience higher starting or inrush currents. Its D tripping characteristic makes it suitable for selected applications involving motors, transformers, inductive loads and equipment with comparatively high startup currents.

The 4-pole configuration provides a compact solution for suitable electrical systems requiring coordinated multi-pole protection and switching. It can be incorporated into distribution boards, industrial control panels, machinery panels and electrical switchboards where a four-pole MCB is required.

A major feature of the 5SL7420-8RC is its 15 kA short-circuit breaking capacity. This provides a higher specified fault-interruption capability for installations where the prospective short-circuit current requires a protective device with an appropriate higher breaking capacity. Proper fault-level assessment and coordination remain essential when selecting the MCB.

The 415 V rating makes the device suitable for compatible electrical distribution systems operating within its specified voltage rating. Its 20 A rated current makes it appropriate for suitably designed circuits where the connected load, conductor capacity and protection requirements match the MCB.

As part of the Siemens SENTRON 5SL7 series, this MCB is suitable for professional electrical protection applications. It can be considered by panel builders, OEMs, electrical contractors, system integrators and industrial maintenance teams for suitable industrial and commercial installations.

The D characteristic should be selected according to the actual load profile. It can help accommodate higher starting currents, but the final selection must consider cable capacity, equipment characteristics, prospective short-circuit current and coordination with upstream and downstream protective devices.

Key Features

• Siemens 5SL7420-8RC
• SENTRON 5SL7 series miniature circuit breaker
• Rated current: 20 A
• Rated voltage: 415 V
• 4-pole (4P) configuration
• D tripping characteristic
• 15 kA short-circuit breaking capacity
• Designed for overload protection
• Designed for short-circuit protection
• Suitable for selected high-inrush-current applications
• Suitable for selected motor circuits
• Suitable for transformer-related circuits
• Suitable for inductive electrical loads
• Suitable for industrial control panels
• Suitable for commercial distribution boards
• Suitable for OEM electrical equipment

Applications

The Siemens 5SL7420-8RC 20A 4-pole D curve MCB can be considered for:

• Industrial electrical distribution panels
• Commercial distribution boards
• Industrial control panels
• Machine control panels
• Motor-related electrical circuits
• Transformer-related circuits
• Inductive load circuits
• Manufacturing facilities
• Electrical switchboards
• OEM electrical panels
• Industrial automation systems
• Machinery installations
• Infrastructure electrical systems
• Power distribution applications
• Electrical equipment protection

Benefits

The Siemens 5SL7420-8RC provides dependable circuit protection for applications requiring a 20 A, 4-pole MCB with D characteristic. The D tripping characteristic is useful for selected circuits where equipment produces higher starting or inrush currents during normal operation.

This makes the MCB suitable for appropriately designed applications involving motors, transformers and inductive equipment, provided that the complete electrical protection system is correctly engineered.

The 15 kA breaking capacity provides a higher specified short-circuit interruption capability for installations where the prospective fault current requires this level of protection. Correct fault-current assessment and coordination with other protective devices are essential for safe application.

The 4-pole construction allows suitable multi-phase circuits to be protected and switched using a compact modular device. This can help panel builders maintain an organized arrangement within distribution boards, control panels and electrical switchboards.

The 20 A rated current makes the 5SL7420-8RC suitable for appropriately designed lower-current circuits, while the 415 V rating supports use in compatible electrical distribution systems within its specified rating.

The Siemens 5SL7 family can also support compatible accessories in suitable configurations, allowing additional protection, signalling or monitoring functions to be incorporated where applicable.

The Siemens 20 A 4P D curve 15 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 locations across India.

Always verify the load characteristics, conductor rating, prospective short-circuit current, system voltage and coordination with upstream and downstream protective devices before installation.

Why Buy Siemens 5SL7420-8RC from SB Smart?

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 5SL7420-8RC 20A 4P D characteristic 15 kA MCB is suitable for customers looking for Siemens circuit protection products for industrial, commercial, machinery and infrastructure 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.

FAQs

1. What is Siemens 5SL7420-8RC?
It is a Siemens SENTRON 5SL7 miniature circuit breaker rated 20 A, 4-pole, D characteristic, 415 V and 15 kA breaking capacity.

2. What is the rated current?
The rated current is 20 A.

3. How many poles does the MCB have?
The 5SL7420-8RC is a 4-pole (4P) miniature circuit breaker.

4. What is the tripping characteristic?
It has a D tripping characteristic, suitable for selected circuits with higher starting or inrush currents.

5. What is the breaking capacity?
The specified short-circuit breaking capacity is 15 kA.

6. What is the rated voltage?
The specified rated voltage is 415 V.

7. Where can this MCB be used?
It can be used in suitable industrial distribution systems, control panels, machinery, motor-related circuits, transformer applications, commercial installations and OEM equipment.

8. Why choose a 15 kA MCB?
A 15 kA breaking capacity is useful for installations where the prospective short-circuit current requires a higher fault-interruption capability. The actual selection should always be based on the calculated fault level and complete protection design.