ABB SSN25-1UVCL-047C21 Low-Voltage Switch-Disconnector Module

Description

Technical Specifications

• Product Type: Low-Voltage Switch-Disconnector Module
• Rated Current (In): 25 A
• Rated Operating Voltage (Ue): 400 V AC / 250 V DC
• Rated Insulation Voltage (Ui): 690 V
• Utilization Category: AC-23A (motor load switching), AC-21A (resistive load switching)
• Short-Time Withstand Current (Icw): 2 kA for 1 second
• Conditional Short-Circuit Current (Inc): 25 kA
• Number of Poles: 1 Pole
• Switching Mechanism: Quick-make / Quick-break (positive contact action)
• Terminal Type: Screw terminals (captive screws)
• Conductor Range: 0.5–2.5 mm² (flexible), 0.5–4.0 mm² (rigid)
• Power Loss: ≤ 0.6 W per pole at rated current
• Mounting: DIN rail mount (35 mm standard) / Direct panel mount
• Dimensions: 17.5 mm (W) × 88 mm (H) × 69 mm (D)
• Net Weight: Approx. 0.12 kg
• Degree of Protection: IP20 (finger-safe terminals)
• Environmental Ratings:
  • Operating Temperature: -25°C to +55°C
  • Storage Temperature: -40°C to +85°C
  • Humidity: 5%–95% RH (non-condensing)
  • Vibration/Shock: Compliant with IEC 60068-2-6 / IEC 60068-2-27
• Standards Compliance: IEC 60947-3, EN 60947-3, UL 508, CSA C22.2 No. 14
• Certifications: CE, RoHS, REACH
• Alternate Part Numbers: SSN25-1UVCL, SSN25-1UVCL-047

Key Features

Superior Switching Performance

• Quick-Make/Quick-Break Mechanism: Ensures fast, positive contact closure and opening, minimizing arcing and extending contact life.
• High Short-Circuit Withstand: 25 kA conditional short-circuit rating provides robust protection against fault currents.
• AC-23A Rating: Full motor load switching capability for direct-on-line motor control applications.

Enhanced Safety & Isolation

• Padlockable Handle: Can be locked in the OFF position with up to 3 padlocks to prevent unauthorized operation during maintenance.
• Visible Contact Indication: Clear visual confirmation of contact position for safe isolation verification.
• Finger-Safe Terminals: IP20 rated terminal design eliminates risk of accidental contact with live parts.
• Positive Interlock: Handle cannot be moved to ON position unless contacts are fully closed, ensuring safe operation.

Modular & Flexible Design

• Compact Form Factor: Slim 17.5 mm width saves valuable panel space, ideal for dense control cabinet installations.
• Dual Mounting Options: Compatible with standard 35 mm DIN rails and direct panel mounting for installation flexibility.
• Hot-Swappable Compatibility: Supports replacement without full system shutdown in compatible setups.
• Accessory Compatibility: Integrates with auxiliary contacts, shunt trips, and under-voltage releases for expanded functionality.

Industrial-Grade Reliability

• Robust Construction: High-quality materials and precision manufacturing for 24/7 operation in harsh industrial environments.
• Low Power Consumption: Minimal energy loss reduces thermal load and improves system efficiency.
• Long Service Life: Designed for extended operational life with minimal maintenance requirements.
• Wide Temperature Tolerance: Operates reliably across extreme temperature ranges for diverse industrial locations.

Easy Installation & Maintenance

• Tool-Free Handle Operation: Ergonomic handle design for smooth, effortless switching.
• Captive Terminal Screws: Prevents loss of screws during installation and maintenance.
• Clear Labeling: Comprehensive marking for easy identification and wiring.
• Front-Facing Terminals: Simplifies wiring and connection from the front of the panel.

Application Scenarios

Industrial Motor Control

• Motor Control Centers (MCCs): Isolation and switching for individual motor starters in manufacturing facilities.
• Conveyor Systems: Control and isolation for conveyor motors in material handling applications.
• Pump & Fan Control: Safe switching for water pumps, exhaust fans, and ventilation systems.
• Machine Tools: Isolation for lathes, mills, and other industrial machinery during maintenance.

Power Distribution Systems

• Low-Voltage Switchboards: Main and branch circuit isolation in industrial power distribution panels.
• Control Panels: Circuit isolation for PLCs, drives, and other control components.
• Building Automation: Power switching for HVAC systems, lighting controls, and elevators.
• Renewable Energy Systems: Isolation for solar inverter and wind turbine control circuits.

Manufacturing & Processing Industries

• Food & Beverage: Hygienic isolation for processing equipment in food manufacturing plants.
• Pharmaceuticals: Safe circuit switching in cleanroom and controlled environment facilities.
• Chemical & Petrochemical: Explosion-proof compatible isolation for hazardous area equipment.
• Textile & Paper Mills: Motor control and isolation for production line machinery.

Infrastructure & Utilities

• Water & Wastewater Treatment: Isolation for pump stations and treatment process equipment.
• Mining & Quarrying: Robust switching for heavy-duty mining machinery and conveyor systems.
• Oil & Gas: Circuit isolation for refinery equipment and pipeline control systems.
• Marine & Offshore: IP-rated isolation for shipboard and offshore platform electrical systems.

Commercial & Residential Applications

• Data Centers: Power isolation for server racks and critical IT equipment.
• Retail & Commercial Buildings: Circuit switching for lighting, HVAC, and refrigeration systems.
• Hospitals & Healthcare: Isolation for medical equipment and life support systems.
• Residential Complexes: Main and sub-circuit isolation in multi-unit residential buildings.

Maintenance & Safety Applications

• Equipment Maintenance Isolation: Safe de-energization of machinery during repair and servicing.
• Emergency Shutdown Systems: Integration with ESD circuits for rapid power isolation.
• Lockout/Tagout (LOTO): Primary component for LOTO safety procedures in industrial facilities.
• Retrofitting & Upgrades: Replacement of legacy switch-disconnectors in existing systems.