Siemens SENTRON Miniature Circuit Breaker 20A, 4-Pole, C Curve, 10kA – 5SL4420-7RCZ12

Product Description

The Siemens 5SL4420-7RCZ12 is a SENTRON Miniature Circuit Breaker (MCB) designed for reliable overload and short-circuit protection in electrical distribution systems. It features a 20 A rated current, 4-pole configuration, C tripping characteristic, and 10 kA breaking capacity, making it suitable for industrial, commercial, and building electrical distribution applications. Siemens specifies the corresponding 5SL4420-7 model as a 4-pole, C-curve, 20 A MCB with a 10 kA breaking capacity.

The MCB operates on AC supply at 400 V, with multi-phase operation up to 440 V, and supports 50/60 Hz operation. It has energy limitation Class 3 and a typical mechanical service life of 10,000 operating cycles.

The Siemens 5SL4420-7RCZ12 is suitable for distribution boards, industrial control panels, commercial electrical installations, machinery panels, three-phase power distribution, and general circuit protection.

At SB Smart, you can source genuine Siemens SENTRON MCBs, MCCBs, MPCBs, contactors, overload relays, and industrial electrical products with GST billing, technical support, bulk-order assistance, and delivery across India.

Key Features

• Brand: Siemens
• Series: SENTRON 5SL
• Type: Miniature Circuit Breaker (MCB)
• Model: 5SL4420-7RCZ12
• Rated Current: 20 A
• Number of Poles: 4-Pole (4P)
• Tripping Characteristic: C Curve
• Breaking Capacity: 10 kA
• Supply Voltage: 400 V AC
• Maximum Multi-Phase Operating Voltage: 440 V AC
• Frequency: 50/60 Hz
• Energy Limiting Class: Class 3
• Protection: Overload and short-circuit protection
• Mounting: DIN rail
• Mechanical Service Life: Typically 10,000 operating cycles

Applications

• Industrial distribution panels
• Commercial electrical installations
• Control panels
• Three-phase power distribution
• Machinery and OEM panels
• Building distribution boards
• Industrial automation systems
• Electrical protection circuits

Benefits

• Reliable overload and short-circuit protection
• High 10 kA breaking capacity
• Compact 4-pole configuration
• C-curve characteristic for circuits with moderate inrush currents
• Easy DIN-rail installation
• Suitable for industrial and commercial distribution
• Reliable Siemens SENTRON performance

Frequently Asked Questions

Q1. What is Siemens 5SL4420-7RCZ12?

The 5SL4420-7RCZ12 is a Siemens SENTRON Miniature Circuit Breaker with a 20 A rating, 4 poles, C-curve tripping characteristic, and 10 kA breaking capacity.

Q2. What is the rated current?

The MCB has a rated current of 20 A. Siemens specifies 20 A operational current at 30°C for the corresponding 5SL4420-7 model.

Q3. What does C curve mean?

The C tripping characteristic is generally suitable for circuits where connected equipment can produce moderate starting or inrush currents, including various motors, transformers, lighting and industrial loads.

Q4. What is the breaking capacity?

The MCB has a 10 kA breaking capacity according to both EN 60898 and IEC 60947-2 specifications listed by Siemens.

Q5. Where can I use this 4-pole MCB?

The 5SL4420-7RCZ12 can be used in three-phase distribution boards, industrial panels, commercial installations, machinery panels, and other AC circuit protection applications where a 4-pole, 20 A C-curve MCB is appropriate.