The Siemens 5SL4450-7RCZ12 Betagard Miniature Circuit Breaker (MCB) is a high-performance circuit protection device designed to safeguard electrical installations against overloads and short circuits. Part of the trusted Siemens Betagard portfolio, this 4 Pole, 50A, C Curve MCB provides reliable protection, operational safety, and long-term durability for residential, commercial, and industrial electrical systems. Siemens is globally recognized for delivering innovative electrical infrastructure, automation, and power distribution solutions.
Engineered for modern electrical installations, the 5SL4450-7RCZ12 ensures fast fault isolation, helping prevent damage to electrical equipment, wiring systems, and connected loads. Its compact modular design enables easy installation in distribution boards, switchboards, control panels, and automation systems.
Available through SBSmart, the Siemens 5SL4450-7RCZ12 is an excellent choice for electrical contractors, OEMs, panel builders, facility managers, and industrial maintenance professionals seeking dependable circuit protection.
Electrical systems are exposed to risks such as overload currents and short-circuit faults that can lead to equipment damage and operational downtime. The Siemens 5SL4450-7RCZ12 automatically disconnects the affected circuit whenever abnormal current conditions occur, helping improve electrical safety and system reliability.
The C Curve tripping profile is designed for circuits that experience moderate inrush currents, making it suitable for a broad range of electrical applications.
Common applications include lighting systems, socket circuits, HVAC installations, small motors, and general-purpose power distribution circuits.
The Siemens Betagard range is engineered to deliver dependable protection and long-term operational reliability. The 5SL4450-7RCZ12 features a compact modular construction compatible with modern DIN rail-mounted electrical systems.
The Siemens 5SL4450-7RCZ12 is widely used in:
Its versatile design makes it suitable for diverse electrical protection requirements.
| Specification | Details |
|---|---|
| Product Name | Betagard Miniature Circuit Breaker (MCB) |
| Model Number | 5SL4450-7RCZ12 |
| SKU | 5SL4450-7RCZ12 |
| Brand | Siemens |
| Series | Betagard |
| Product Type | Miniature Circuit Breaker (MCB) |
| Number of Poles | 4 Pole |
| Rated Current | 50A |
| Tripping Curve | C Curve |
| Mounting Type | DIN Rail Mount |
| Protection Type | Overload & Short-Circuit Protection |
| Application | Electrical Distribution & Circuit Protection |
| Installation | Distribution Boards & Control Panels |
| Usage | Residential, Commercial & Industrial Systems |
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