Product Description

Siemens 5SL5220-7RC MCB 20A 2-Pole C Characteristic 10kA DC

The Siemens 5SL5220-7RC is a SENTRON 5SL5 miniature circuit breaker (MCB) specifically designed for DC circuit protection. This Siemens DC MCB features a 20 A rated current, 2-pole configuration, C tripping characteristic, 440 V DC operating voltage and 10 kA short-circuit breaking capacity. It is designed to provide reliable protection against overload and short-circuit conditions in suitable DC electrical installations.

The Siemens 5SL5220-7RC 20A 2-pole DC MCB is suitable for applications where dedicated DC circuit protection is required. Unlike a standard AC MCB, a DC-rated miniature circuit breaker is designed according to the requirements of DC fault interruption. This makes the 5SL5220-7RC suitable for compatible industrial DC distribution systems, control panels, battery circuits, automation equipment, power electronics and other DC applications.

With a 20 A rated current, this MCB is suitable for appropriately designed low-to-medium current DC circuits. The protective-device rating should be matched with the connected load, conductor capacity and operating conditions to provide effective protection without unnecessary tripping.

The 2-pole configuration provides coordinated protection and switching for compatible DC circuits. In DC applications, correct pole arrangement and wiring are particularly important because DC arcs behave differently from AC arcs. The approved Siemens connection arrangement should therefore be followed for the intended voltage and application.

The C tripping characteristic provides a defined tripping response for suitable circuits where moderate starting or transient currents can occur. This makes the MCB suitable for selected DC control and equipment circuits where the load characteristics correspond to a C characteristic.

The 10 kA short-circuit breaking capacity provides the specified fault-interruption capability for applicable DC protection arrangements. Before installation, the prospective short-circuit current should always be assessed to confirm that the MCB is suitable for the actual DC system.

Key Features

• Siemens 5SL5220-7RC
• SENTRON 5SL5 series DC miniature circuit breaker
• Rated current: 20 A
• 2-pole (2P) configuration
• C tripping characteristic
• 10 kA short-circuit breaking capacity
• Maximum operating voltage: 440 V DC
• Designed specifically for DC circuit protection
• Designed for overload protection
• Designed for short-circuit protection
• Suitable for compatible DC distribution systems
• Suitable for industrial DC control panels
• Suitable for battery and energy-related applications
• Suitable for power-electronics equipment
• Suitable for OEM electrical panels
• Compact modular circuit protection solution

Applications

The Siemens 5SL5220-7RC 20A 2-pole C curve DC MCB can be considered for:

• DC electrical distribution
• Industrial DC control panels
• Battery systems
• Energy storage applications
• DC power supply circuits
• Industrial automation systems
• Power electronics equipment
• OEM DC electrical panels
• Machinery DC circuits
• DC switchboards
• Renewable-energy electrical systems
• Control and auxiliary DC circuits
• Industrial infrastructure
• Electrical equipment protection
• Suitable medium-current DC installations

Benefits

The Siemens 5SL5220-7RC provides dependable circuit protection for DC applications requiring a 20 A, 2-pole MCB with C characteristic and 10 kA breaking capacity. Its dedicated DC design makes it suitable for electrical systems where a protective device with appropriate DC interruption capability is required.

The 20 A rated current makes this MCB suitable for appropriately designed low-to-medium current DC circuits. Correctly matching the MCB rating with the connected load and conductor capacity helps provide reliable protection against overload while allowing normal operating current to flow.

The C tripping characteristic offers a practical solution for suitable DC circuits where moderate starting or transient currents may occur. This can make the device appropriate for selected industrial control circuits, automation systems, DC equipment and auxiliary applications, subject to correct system design.

The 2-pole construction provides coordinated protection and switching for compatible DC circuits. It can help create a clean and organized protection arrangement in DC distribution boards, control panels, battery systems and OEM electrical assemblies.

The 10 kA breaking capacity provides substantial specified short-circuit interruption capability for applicable DC installations. Since DC fault interruption depends on factors such as system voltage, current and circuit configuration, the actual installation should be evaluated before selecting the MCB.

The 440 V DC maximum operating voltage makes the 5SL5220-7RC suitable for compatible higher-voltage DC applications within its specified operating conditions. This can include selected industrial DC distribution, battery-related systems, power electronics and other suitable applications.

The Siemens SENTRON 5SL5 DC series provides a dedicated modular solution for professional DC circuit protection. The 5SL5220-7RC can therefore be considered by OEMs, panel builders, electrical contractors, automation integrators, energy-sector customers and industrial maintenance teams.

For customers sourcing Siemens DC circuit protection products in 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, the 5SL5220-7RC can be considered for suitable applications.

Always verify the actual DC system voltage, polarity, pole connection, prospective short-circuit current and Siemens-approved wiring arrangement before installation.

Why Buy Siemens 5SL5220-7RC from SB Smart?

SB Smart supplies Siemens industrial electrical, automation and DC circuit protection products for OEMs, panel builders, electrical contractors, system integrators, energy-sector customers and industrial maintenance teams across India.

The Siemens 5SL5220-7RC 20A 2P C characteristic 10 kA DC MCB is suitable for customers looking for Siemens circuit protection products for industrial DC distribution, battery systems, control panels, power electronics, renewable-energy systems and OEM equipment.

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 5SL5220-7RC?
It is a Siemens SENTRON 5SL5 DC miniature circuit breaker rated 20 A, 2-pole, C characteristic and 10 kA breaking capacity.

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

3. Is the 5SL5220-7RC designed for DC applications?
Yes. It belongs to the Siemens 5SL5 DC MCB range and is intended for suitable DC circuit protection applications.

4. What is the maximum DC operating voltage?
The specified maximum operating voltage is 440 V DC.

5. What is the breaking capacity?
The specified short-circuit breaking capacity is 10 kA.

6. How many poles does this MCB have?
The 5SL5220-7RC is a 2-pole (2P) DC miniature circuit breaker.

7. Where can the Siemens 5SL5220-7RC be used?
It can be considered for suitable DC distribution systems, industrial control panels, battery applications, power electronics, OEM equipment and renewable-energy electrical systems.

8. Is the wiring arrangement important for this DC MCB?
Yes. Correct pole connection, polarity and wiring arrangement are important for proper DC fault interruption. The installation should follow the applicable Siemens connection instructions.