ABB 2CDS200918R0001 S2C‑NT Manual Neutral Conductor Isolator

Description

Technical Specifications

Core Functional Parameters

• Product Type: Manual Neutral Conductor Isolator (Accessory for MCBs)
• Compatible MCB Series: ABB S200 Series (S201, S202, S203, S204, etc.)
• Mounting Position: Left‑hand side of the S200 series MCB (DIN‑rail mounted)
• Switching Mechanism: Manual lever operation with mechanical interlock
• Interlock Function: Neutral closes before MCB ON; Neutral opens after MCB OFF
• Conductor Connection: Screw terminal for neutral conductor
• Wire Compatibility: Suitable for copper and aluminum conductors (standard for S200 series)
• Terminal Torque: Compliant with ABB S200 series terminal tightening specifications
• Number of Poles: 1‑pole (neutral conductor only)

Physical & Environmental Specifications

• Mounting: Standard 35 mm DIN‑rail (EN 60715)
• Dimensions: Matches S200 series MCB width for flush panel integration
• Enclosure Rating: IP20 (touch‑proof terminals)
• Operating Temperature: ‑25 °C to +55 °C
• Storage Temperature: ‑40 °C to +70 °C
• Relative Humidity: 5%–95% RH (non‑condensing)
• Vibration Resistance: IEC 60068‑2‑6 (10–2000 Hz, 2 g)
• Shock Resistance: IEC 60068‑2‑27 (15 g, 11 ms)
• Material: Flame‑retardant thermoplastic (UL 94 V‑0)
• Color: Standard ABB equipment gray (matches S200 series)

Safety & Compliance

• Standards Compliance: IEC/EN 60947‑3, IEC/EN 60898‑1 (for MCB accessory)
• Safety Class: II (double insulation)
• Flammability Rating: UL 94 V‑0
• Country Approvals: CE, UL, CSA (for global market deployment)
• RoHS Compliant: Yes (meets EU RoHS 2 directive)

Functional Features

1. Safe Mechanical Interlocking

• Forced Switching Sequence: Prevents neutral disconnection while phase is live; neutral closes first, opens last relative to MCB.
• Positive Manual Operation: Ergonomic lever for reliable manual opening/closing of neutral circuit.
• Touch‑Proof Terminals: IP20 rated terminals protect against accidental contact with live parts.
• Mechanical Durability: Designed for long‑term cyclic operation with consistent interlock performance.

2. Seamless Integration

• DIN‑Rail Mount: Clips directly onto 35 mm DIN‑rail alongside S200 MCBs for neat panel layout.
• Flush Fit: Matches S200 series width and height for uniform panel aesthetics.
• No External Wiring: Mechanical interlock engages directly with MCB mechanism; no auxiliary wiring required.
• Plug‑and‑Play Installation: Mounts to left of S200 MCB without tools (snap‑on design).

3. Operational Safety & Reliability

• Isolation Indication: Clear visual position indicator for OPEN/CLOSED neutral status.
• Lockable Function: Accepts padlock (not included) in OPEN position for secure isolation during maintenance.
• High‑Temperature Resistance: Flame‑retardant housing withstands thermal stress in industrial environments.
• Corrosion Resistance: Suitable for use in harsh industrial and marine‑grade installations.

4. Maintenance & Testing Support

• Neutral Isolation for Measurement: Enables safe voltage, current, and impedance testing on phase circuits without neutral interference.
• Simplified Troubleshooting: Allows neutral disconnection for isolating faults in single‑phase circuits.
• Compatibility with Test Equipment: Designed for safe connection of multimeters, clamp meters, and phase sequence testers.
• Non‑Load Breaking: Intended for isolation only; not designed to break load current (MCB provides load switching).

Application Scenarios

1. Electrical Panel Installation & Maintenance

• Final Distribution Boards: Installed in residential, commercial, and industrial distribution boards with S200 MCBs.
• Motor Control Centers (MCCs): Used in MCCs for safe neutral isolation during motor maintenance and testing.
• Control Panels: Integrated into machine control panels for safe circuit isolation.
• Power Distribution Units (PDUs): Deployed in server rooms and data center PDUs for circuit testing.

2. Electrical Testing & Commissioning

• Phase Voltage Measurement: Isolates neutral to measure phase‑to‑phase and phase‑to‑ground voltages accurately.
• Current Transformer (CT) Testing: Enables safe testing of CT circuits without neutral feedback.
• Insulation Resistance Testing: Facilitates megohmmeter testing of phase conductors with neutral isolated.
• System Commissioning: Used during new installation commissioning to verify circuit integrity.

3. Industrial Machinery & Equipment

• Machine Tools: Installed on machine power circuits for safe maintenance and repair.
• Conveyor Systems: Provides neutral isolation for conveyor motor control circuits.
• Pump and Fan Installations: Used in water treatment and HVAC systems for equipment servicing.
• Manufacturing Lines: Integrated into production line power distribution for safe equipment isolation.

4. Building Services & Infrastructure

• Lighting Circuits: Used in commercial lighting panels for safe lamp replacement and circuit testing.
• Heating, Ventilation, and Air Conditioning (HVAC): Deployed in HVAC control panels for system maintenance.
• Fire Alarm Systems: Provides safe isolation for fire alarm circuit testing.
• Security Systems: Used in access control and CCTV power circuits for equipment servicing.

5. Utilities & Infrastructure

• Water Treatment Plants: Installed in pump and control panels for safe system maintenance.
• Wastewater Facilities: Used in aeration and filtration system power circuits.
• Power Substations: Deployed in auxiliary power distribution panels for substation equipment.
• Telecom Facilities: Integrated into telecom shelter power distribution for equipment testing.