Citel DS44S-400/G SPD, type 2, 230/400V, 20kA

Product Overview

The DS44S-400/G is a Type 2 AC surge protector with integrated remote signaling designed for primary protection of 3-phase+Neutral networks at the main electrical panel in 230/400V applications. This multipolar SPD features hybrid MOV+GDT technology providing both common mode and differential mode protection with pluggable modules for each phase, thermal disconnectors, and changeover contact remote signaling for comprehensive system monitoring.

Key Features:

• Hybrid MOV+GDT Technology: Combines metal oxide varistor and gas discharge tube for enhanced surge suppression with zero leakage current
• Dual Mode Protection: Provides both common mode (L-PE, N-PE) and differential mode (L-N, L-L) protection
• Integrated Remote Signaling: Built-in changeover contact output for remote status monitoring and facility management integration
• Modular Design: Individual pluggable modules for each phase allowing easy maintenance and selective replacement
• High Discharge Capacity: 20kA nominal discharge current with 40kA maximum total discharge (8/20μs)
• Thermal Protection: Internal thermal disconnectors with mechanical indicator per pole for visual status verification
• TOV Performance: 580Vac withstand, 770Vac disconnection, 1200V/300A/200ms withstand capability
• Flexible Connection: Screw terminals (2.5-25mm²) or bus bar connection options

Technical Specifications:

• Article Number: DS44S-400/G (Part Number 461432)
• Protection Type: Type 2 AC surge protector
• Configuration: 3-phase+Neutral (4-pole)
• Network: 230/400V 3-phase+N
• AC System: TT-TNS
• Operating Voltage: 230Vac nominal, 440Vac maximum
• Nominal Discharge Current (In): 20kA (8/20μs)
• Max. Discharge Current (Imax): 40kA per pole (8/20μs)
• Protection Levels: 1.8kV (L-N mode), 1.5kV (N-PE mode)
• Residual Current: None (0.5mA at disconnect accessories)
• Short-Circuit Current Rating: 25,000A
• Mounting: DIN Rail 35mm (EN 60715)
• Material: Thermoplastic UL94 V-0
• Operating Temperature: -40°C to +85°C
• Environmental Rating: IP20
• Weight: 0.331kg

Compatible Accessories:

• Disconnect Accessories: DSM40-400 + DSM40G-600
• Non-Signaling Version: DS44-400/G (without remote signaling, Part Number 461412)
• Voltage Variants: DS44S-280/G (280V), DS44S-320/G (320V)
• 3-Phase Configuration: DS43S-400 (3-pole without neutral)
• Updated Model: DAC50S-31-440 (latest innovation)

Compliance & Certifications:

• Standards: IEC 61643-11, EN 61643-11, UL1449 Edition 5
• Certifications: UL Listed, CSA, TÜV, EAC
• Fuse Requirements: Type gG - 50A (Type 'S' or delayed)
• Environmental: RoHS compliant

Applications:

Essential for primary surge protection with remote monitoring in three-phase main electrical panels of commercial buildings, industrial facilities, manufacturing plants, data centers, telecommunications installations, hospitals, critical infrastructure, and any 230/400V three-phase+Neutral electrical distribution system requiring Type 2 protection with both common and differential mode capabilities, integrated remote status signaling for building management systems, modular phase protection, and zero leakage current operation for sensitive equipment protection.