Siemens Sentron Miniature circuit breaker, curve C, 4-pole, 3P+N, 40A Part number 5SL6440-7

Product Overview

The Siemens SENTRON 5SL6440-7 is a 4-pole miniature circuit breaker rated at 40 A designed for industrial and infrastructure installations. With a C-curve tripping characteristic and a high switching capacity, it provides dependable protection for multi-phase installations where a compact footprint and robust performance are required.

Key Features

• 4-pole miniature circuit breaker (4P) with C-curve tripping characteristic
• Rated current: 40 A, suitable for AC multi-phase operation up to 440 V
• Switching capacity: up to 6 kA according to EN 60898 / IEC 60947-2
• Rated insulation voltage: up to 440 V AC in multi-phase operation
• Compact design with only 4 width units and installation depth of 70 mm
• Halogen-free, silicone-free and sealable construction for industrial compliance

Technical Specifications

• Product Series: Siemens SENTRON 5SL6 Series
• Article Number: 5SL6440-7
• Number of Poles: 4 (4P)
• Tripping Characteristic: C-type
• Rated Current (In): 40 A
• Rated Insulation Voltage (Ui): 440 V AC (single or multi-phase)
• Switching Capacity (Icu): 6 kA (EN 60898 / IEC 60947-2)
• Power Loss per Pole: 3.3 W typical at rated current
• Width: 54 mm (4 width units)
• Height: 90 mm
• Depth: 76 mm (installation depth: 70 mm)
• Net Weight (Approx.): 0.637 kg
• Protection Class: IP20 with connected conductors
• Mounting Position: Any, DIN-rail compatible

Compliance & Certifications

• Manufactured in compliance with IEC/EN 60898-1 and IEC/EN 60947-2 standards
• Designed for use in industrial and infrastructure electrical installations

Applications

Ideal for use in low-voltage multi-phase distribution boards, switchgear and industrial installations where high capacity circuit protection is required. The 5SL6440-7 is suited to protect feeders, motors or general service circuits in commercial, industrial or infrastructure environments where compact size and robust performance are essential.