Siemens Surge protector, Din rail mount, 1-phase, 40kA Part number 5SD7464-1

Product Overview

The Siemens Surge Protector 5SD7464-1 is a SENTRON Type 2 surge arrester designed for DIN-rail mounting in 1-phase systems, providing a high discharge capacity of up to 40 kA. Engineered for TT and TN-S distribution networks, this 3+1-pole device (L-N, L-PE, N-PE) offers reliable protection against transient overvoltages with a maximum continuous operating voltage of 350 V AC. It features an integrated remote signalling contact for continuous system status monitoring and ensures dependable surge protection for industrial and commercial low-voltage installations.

Key Features

• Type 2 surge protection device for industrial and commercial low-voltage systems
• 3+1-pole configuration for L-N, L-PE, and N-PE protection paths
• DIN-rail mountable design for quick and secure installation
• High surge discharge capacity up to 40 kA (8/20 µs)
• Nominal discharge current 20 kA (8/20 µs)
• Continuous operating voltage up to 350 V AC
• Includes remote signalling contact (PDT) for monitoring arrester condition
• Compact 4-module (71.5 mm) width for efficient panel integration
• High reliability for system and equipment protection in surge-prone environments

Technical Specifications

• Product Series: SENTRON Surge Arrester Type 2
• Article Number: 5SD7464-1
• System Compatibility: TT and TN-S
• Configuration: 3+N/PE (3+1)
• Continuous Operating Voltage (Uc): 350 V AC
• Nominal Discharge Current (In): 20 kA (8/20 µs)
• Maximum Discharge Current (Imax): 40 kA (8/20 µs)
• Protection Level (Up): L-N ≤ 1.6 kV, L-PE ≤ 1.9 kV, N-PE ≤ 0.4 kV
• Short-Circuit Current Rating: 25 kA at 264 V AC
• Mounting: DIN-rail (NS35)
• Width: 71.5 mm (4 TE)
• Operating Temperature: –40 °C to +80 °C

Compliance & Certifications

• Complies with IEC 61643-11 and EN 61643-11 standards for surge protective devices
• Test category II (Type 2) protection class
• Designed and manufactured by Siemens for high-performance surge protection in low-voltage networks

Applications

Ideal for installation in low-voltage distribution boards, control panels, and switchgear systems requiring robust protection against voltage surges. Suitable for 1-phase TT and TN-S systems in industrial plants, infrastructure facilities, commercial buildings, and automation environments where high discharge capacity and remote status indication are required.