Citel DAC40CS-11-275 SPD, type 2/3, pluggable, 275VAC, 20kA

Product Overview

The DAC40CS-11-275 is a compact, single-phase Type 2 or Type 3 surge protection device engineered to safeguard electrical systems against transient overvoltages and voltage surges. Featuring a pluggable protection module with replaceable SPD cartridges, this device offers maximum operating voltage of 275 VAC and delivers robust surge protection with a discharge capacity of 40 kA. Designed for DIN rail mounting in space-constrained installations, the unit incorporates high-energy varistor technology with integrated thermal disconnection and dual status signaling capabilities for enhanced safety and monitoring.

Key Features:

• High-Energy Varistor Protection: Utilizes advanced varistor technology to effectively clamp voltage and divert surge currents away from protected equipment, ensuring reliable defense against lightning strikes and grid switching transients.
• Pluggable Modular Design: Features replaceable SPD cartridge modules that enable quick maintenance and replacement without complex rewiring, minimizing system downtime and reducing long-term operational costs.
• Dual Status Signaling: Equipped with both visual fault indicator and remote signaling capability via potential-free contact, allowing operators to monitor device status locally or from remote locations for proactive maintenance.
• Thermal Disconnection System: Incorporates automatic thermal break mechanism that safely disconnects the SPD from the power supply during sustained overvoltage conditions, preventing equipment damage and ensuring continued system protection.
• Compact Space-Saving Profile: Optimized housing design allows installation in tight spaces within electrical panels while maintaining full protection capabilities and easy accessibility for maintenance.
• Type 2/3 Classification: Provides comprehensive surge protection suitable for main distribution boards and sub-distribution panels, offering flexibility for various installation locations within the electrical system.
• Common Mode Protection: Delivers transverse and longitudinal voltage protection to safeguard connected equipment from both differential and common-mode surge events.
• Energetically Coordinated Design: Engineered for integration into coordinated protection schemes, ensuring proper energy distribution across multiple protection stages without compromising system integrity.

Technical Specifications:

• Article Number: 821520221
• Configuration: Single-phase (1-pole), 2-pole device
• Maximum AC Operating Voltage (Uc): 275 VAC
• Nominal Discharge Current (In): 20 kA per pole (8/20 µs)
• Maximum Discharge Current (Imax): 40 kA per pole (8/20 µs)
• Protection Level (Up): 1500 V
• Technology: Metal Oxide Varistor (MOV)
• Protection Mode: Common mode (transverse/longitudinal)
• Operating Temperature Range: -40°C to +85°C
• Mounting: DIN rail (35mm standard)
• Connection Type: Screw terminals - L/N: 1.5-10mm² (16mm² rigid), PE: 2.5-25mm² (35mm² rigid)
• Enclosure Rating: IP20
• Protection Class: Class I

Compatible Accessories:

• DAC40CS-20-275 - 2-pole single-phase variant for 275V systems
• DAC40CS-11-320 - Single-phase model for 320V applications
• DAC40CS-11-150 - Single-phase variant for 150V systems
• DAC40CS-31-275 - 3-phase+N configuration for multi-phase protection (Part Number 821520222)
• DAC40CS-40-275 - 4-pole 3-phase+N model for comprehensive network protection
• Remote Signaling Kits - Optional accessories for extended monitoring capabilities
• Replacement SPD Cartridges - Field-replaceable modules for maintenance

Compliance & Certifications:

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

Applications:

This surge protection device is ideal for installation at main distribution boards, sub-distribution panels, and divisional panel levels across residential buildings, commercial facilities, industrial plants, data centers, telecommunications infrastructure, and critical equipment installations where protection against lightning-induced surges, switching overvoltages, and grid disturbances is essential for maintaining system reliability and safeguarding sensitive electronic equipment in TN, TNC, TNS, and TT network configurations.