5SY63637 – Siemens 63A 3-Pole Miniature Circuit Breaker, C-Curve, 400V

5SY63637

The Siemens 5SY63637 is a high-capacity 3-pole miniature circuit breaker from the proven Sentron 5SY6 Series, engineered to provide reliable overload and short-circuit protection in demanding power distribution applications. Rated for 63 amps and 400V AC, this breaker features a C-curve tripping characteristic and a 6kA interrupting capacity for dependable circuit performance. Its 70mm installation depth and DIN-rail mounting make it easy to install in control panels and distribution boards. With touch-safe terminals, halogen-free construction, and durable Siemens engineering, the 5SY63637 ensures long-term safety and consistent performance in both commercial and industrial settings. At Essential Parts, we stock the 5SY63637 for fast shipping, competitive pricing, and expert technical support — helping you keep your projects powered and protected. Designed for reliable protection in commercial and light industrial applications, it fits in a D = 70 mm depth profile and supports conductors from 0.75 mm² up to 35 mm². Its compact design and robust performance make it suitable for control panels, distribution panels, and OEM systems. Key Specifications:

• Part Number: 5SY63637
• Manufacturer: Siemens
• Series: 5SY / Sentron
• Type: Miniature Circuit Breaker (MCB)
• Current Rating: 63 A
• Poles: 3-Pole
• Trip Curve: C-curve
• Voltage: 400 V AC
• Breaking Capacity: 6 kA
• Mounting Depth: 70 mm
• Conductor Range: 0.75–35 mm²
• Protection Class: IP20 (with conductors connected)

Specifications

• Part Number: 5SY63637
• Brand : Siemens

Product Data

• UPC : 75455495801
• GTIN : 00754554958019
• Weight : 1.07 lb