The Siemens 5SL4120-7RC is a SENTRON 5SL series Miniature Circuit Breaker (MCB) designed for safe protection of electrical circuits against overload and short-circuit faults. It is a 1-pole, 20A rated MCB suitable for 230/240V single-phase systems and 415V AC distribution networks.
It uses a C-curve tripping characteristic, making it suitable for general-purpose loads, lighting circuits, socket circuits, and small inductive loads.
• Siemens SENTRON 5SL series MCB
• Model: 5SL4120-7RC
• Rated Current: 20A
• 1 Pole (1P) configuration
• Operating Voltage: 240/415V AC
• Tripping Curve: C Curve
• Protection against overload & short circuit
• DIN rail mounting system
• Compact modular design (18 mm width)
• Breaking capacity: 10kA @ 230/400V AC
• Energy limiting class: Class 3
• Mechanical life: ~10,000 operations
• IP20 protection (with connected conductors)
• Maintenance-free operation
• Suitable for residential, commercial & industrial use
| Parameter | Specification |
|---|---|
| Product Series | Siemens SENTRON 5SL |
| Model Number | 5SL4120-7RC |
| Product Type | Miniature Circuit Breaker (MCB) |
| Rated Current | 20A |
| Number of Poles | 1 Pole (1P) |
| Tripping Curve | C Curve |
| Rated Voltage | 240/415V AC |
| Frequency | 50/60 Hz |
| Breaking Capacity | 10kA |
| Mounting Type | DIN Rail |
| Protection | Overload + Short Circuit |
| Degree of Protection | IP20 (with wiring) |
| Application | General distribution circuits |
| Brand | Siemens |
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