Siemens 5SY4325-7 Miniature Circuit Breaker 3P C 25A 10kA SENTRON

The Siemens 5SY4325-7 is a 3-pole miniature circuit breaker from the SENTRON range, rated at 25A with a type C tripping characteristic for overcurrent and short-circuit protection in AC systems up to 400V. It delivers a breaking capacity of 10kA per EN 60898 and 20kA per IEC 60947-2, with an installation depth of 70mm for DIN rail mounting in any orientation.

Technical specifications:

• MLFB: 5SY4325-7
• Manufacturer: Siemens
• Product line: SENTRON
• Poles: 3 (3P)
• Rated current: 25A AC (23.8A at 40°C, 22.55A at 50°C)
• Tripping characteristic: C (Ii = 8x In)
• Rated voltage: 400V AC / 60V DC (max operating voltage 72V DC)
• Insulation voltage: 440V AC
• Breaking capacity: 10kA (EN 60898), 20kA (IEC 60947-2), 15kA DC (IEC 60947-2)
• Energy limitation class: 3
• IP rating: IP20 with connected conductors
• Overvoltage category: 3 / Pollution degree: 3
• Operating temperature: -40°C to +70°C
• Mounting: DIN rail, any position, 3 modular width units
• Dimensions (W x H x D): 54 x 90 x 76mm (installation depth 70mm)
• Weight: 463g
• Conductor cross-section: 0.75-35mm² solid/stranded, 0.75-25mm² finely stranded with ferrules
• Tightening torque: 2.5-3.5 N·m
• Power loss per pole: 2.2W at rated current
• Standards: IEC/EN 60898-1, IEC/EN 60947-2, UL1077

Features and benefits:

• Touch protection (IP20) with connected conductors
• Halogen-free and silicon-free construction
• Sealable design for tamper resistance
• Supplementary devices can be installed for extended functionality
• Certified for main switch duty per EN 60204-1
• Wide operating range: -40°C to +70°C, suitable for harsh environments

Applications:

• Three-phase distribution boards in commercial and industrial buildings
• Motor and equipment circuit protection in industrial control panels
• Main switch duty in machinery per EN 60204-1
• Marine and railway installations (approvals included)
• Infrastructure systems requiring dual compliance with EN 60898 and IEC 60947-2

Compliant with IEC/EN 60898-1 and IEC/EN 60947-2. Part of the Siemens SENTRON range.

Also known as: Siemens 5SY4325-7, SENTRON 3-pole C25 miniature circuit breaker, 5SY4 3P C25A MCB.