Siemens 5SY4401-7 Miniature Circuit Breaker 4P C1A 10kA

The Siemens 5SY4401-7 is a 4-pole SENTRON miniature circuit breaker (MCB) rated 1 A with a type C tripping characteristic and 10 kA breaking capacity to EN 60898. It protects low-current control, measuring and auxiliary circuits on 400 V AC three-phase systems against overload and short circuit, in infrastructure and industrial installations.

Technical specifications:

• MLFB: 5SY4401-7
• Manufacturer: Siemens
• Product line: SENTRON
• Product type: Miniature circuit breaker
• Number of poles: 4 (4P)
• Tripping characteristic: C
• Rated current: 1 A
• Rated voltage: 400 V AC (multi-phase), 230 V AC (single-phase), 60 V DC, max. 72 V DC
• Frequency: 50/60 Hz
• Insulation voltage (Ui): 440 V AC
• Breaking capacity: 10 kA (EN 60898), 35 kA (IEC 60947-2 AC), 15 kA (IEC 60947-2 DC), 5 kA (UL 1077 / CSA C22.2 No. 235)
• Energy limitation class: 3
• Instantaneous trip setting: 7.5 x In
• Operational current vs temperature: 0.95 A at 40 °C, 0.9 A at 50 °C, 0.85 A at 60 °C
• Power loss: 1.2 W per pole
• Degree of protection: IP20 with connected conductors
• Overvoltage category: 3, pollution degree: 3
• Conductor cross-section: 0.75 - 35 mm² solid or stranded, 0.75 - 25 mm² finely stranded with end sleeve
• Tightening torque: 2.5 - 3.5 N·m
• Combined terminals top and bottom: Yes
• Mounting: DIN rail, any position, supply from any side
• Dimensions (W x H x D): 72 x 90 x 76 mm, installation depth 70 mm
• Modular width: 4 units
• Mechanical service life: 10,000 operating cycles
• Ambient temperature: -40 °C to 70 °C (operation), -40 °C to 75 °C (storage)
• Net weight: 627 g
• EAN: 4001869182148

Features and benefits:

• Touch-protected terminals with connected conductors
• Halogen-free and silicon-free construction
• Sealable to prevent unauthorised switching
• Accepts installable supplementary devices such as auxiliary and fault signal contacts
• Suitable as a main switch in accordance with EN 60204-1

Applications:

• Protection of control transformers, measuring and signal circuits with low rated current
• Three-phase plus neutral sub-circuits in distribution boards and control panels
• Machine control panels where a C characteristic is needed for loads with moderate inrush
• Main switch duty on machinery per EN 60204-1

Conforms to IEC/EN 60898-1, IEC/EN 60947-2 and UL 1077. Part of the Siemens SENTRON 5SY range.

Also known as: Siemens 5SY4401-7, SENTRON MCB 4P C1A 10kA, 5SY4 C1 4 pole, Siemens 1A C curve 4 pole circuit breaker