Citel DS440S-230/G SPD, compact, type 2, 3-phase, 230VAC, 20kA

Product Overview

The DS440S-230/G is a compact Type 2 surge protection device for three-phase plus neutral networks at main switchboard installations. Utilizing metal oxide varistor technology with thermal disconnection, this ultra-compact 2-module-wide unit provides common and differential mode protection with 40 kA maximum discharge capacity across L/N and N/PE paths. The pluggable design with fixed base architecture enables rapid field maintenance for 230/400V TT-TN electrical systems.

Key Features:

• High-Energy MOV Protection: Metal oxide varistor elements deliver 20 kA nominal and 40 kA maximum discharge current per pole for comprehensive defense against lightning surges and switching transients.
• Dual Protection Modes: Common and differential mode topology safeguards L/N and N/PE paths with protection levels of 1.5/0.9 kV and 1.5/1.25 kV for complete system coverage.
• Pluggable Module Design: Field-replaceable protection cartridge separates from fixed base, allowing quick replacement without disconnecting wiring or removing the base unit.
• Ultra-Compact Footprint: Industry-leading 2-module-wide (36mm) design occupies minimal panel space while maintaining full 40 kA discharge capacity.
• Thermal Disconnection: Automatic thermal disconnector isolates failed elements at 440 VAC threshold, preventing continued operation under fault conditions.
• Triple Status Indicators: Three independent mechanical windows provide immediate visual confirmation of module condition for rapid fault identification.
• Remote Signaling: Changeover contact output enables integration with building management systems and SCADA platforms for centralized monitoring.
• High Fault Current Rating: 10,000 A short-circuit withstand rating with internal backup fuse coordination ensures reliable operation in high-fault-current installations.

Technical Specifications:

• Article Number: 311732
• SPD Type: Type 2
• Technology: Metal Oxide Varistor (MOV)
• Configuration: 3-phase + Neutral (4-pole)
• Network: 230/400V three-phase, TT-TN systems
• Maximum Continuous Voltage (Uc): 255 VAC
• Voltage Protection Level (Up): 1.5/0.9 kV (L/N), 1.25 kV (L/PE), 1.5 kV (N/PE)
• Nominal Discharge Current (In): 20 kA per pole (8/20 µs)
• Maximum Discharge Current (Imax): 40 kA per pole (8/20 µs)
• Protection Modes: Common/Differential (L/N and N/PE)
• Temporary Overvoltage: 335 VAC continuous, 1200V/300A/200ms transient
• Disconnection Voltage: 440 VAC
• Short-Circuit Current: 10,000 A
• Leakage Current: 0.5 mA maximum
• Connection: Screw terminals 1.5-10mm² (L/N), 2.5-25mm² (PE)
• Mounting: DIN rail 35mm (EN 60715)
• Housing: Thermoplastic UL94 V-0
• Operating Temperature: -40°C to +85°C
• Enclosure Rating: IP20
• Weight: 0.217 kg
• Backup Protection: Type S/delayed fuse, 50-125A, Type gG

Compatible Accessories:

• DSM440-230/G - Standard replacement protection module
• DSM440-230/GPE - Enhanced replacement module with PE protection
• DS440S-280/G and DS440S-320/G - Higher voltage variants (280V/320V)
• DS440-230/G, DS440-280/G, DS440-320 - Non-signaling versions
• DSM40-230 (331700) - Single-pole replacement module

Compliance & Certifications:

• IEC 61643-11 / EN 61643-11 certified
• UL1449 Edition 5 compliant
• EAC certified

Applications:

This surge protector is designed for main switchboard and primary distribution panel installations in commercial buildings, industrial facilities, manufacturing plants, data centers, telecommunications infrastructure, healthcare facilities, educational institutions, municipal utilities, renewable energy systems, and three-phase electrical distribution systems requiring coordinated Type 2 protection against direct and indirect lightning effects, utility grid switching transients, motor starting surges, and electromagnetic interference in TT and TN grounding configurations where compact footprint, easy maintenance, and remote monitoring are essential.