ABB 1SBL143001R8110 DC contactor

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ABB 1SBL143001R8110 DC Contactor

Product Description

Key Specs

• Electrical Ratings:
  • Control Circuit (Coil): 24V DC (rated voltage); coil power consumption ≤15W (pick-up) / ≤5W (holding).
  • Main Circuit: Rated current (Ie) 100A DC; rated breaking capacity (Icu) 1kA DC (at 250V DC, resistive load).
  • Voltage Rating: Max main circuit voltage 250V DC (continuous operation).
• Contact Configuration: 1 normally open (NO) main contact (single-pole, SPNO); no auxiliary contacts (basic switching design).
• Contact Material: Silver-nickel (AgNi) alloy — high conductivity, wear resistance, and arc-quenching performance for DC circuits.
• Mechanical & Environmental:
  • Mechanical life: ≥100,000 operations; electrical life: ≥10,000 operations (at rated current).
  • Env: -25°C~+70°C, 5%-95% RH (non-condensing); IP20 (panel-mounted, protected against finger contact).
  • Dimensions (W×H×D): 65mm×85mm×50mm; weight ~350g.
• Mounting & Terminals: 35mm DIN rail (EN 60715) or screw-mounted; main terminals (M5 thread) for 6-16mm² copper cables; coil terminals (M3 thread) for 0.5-1.5mm² cables.

Core Functions

1. DC Load Switching: Turns DC circuits on/off (e.g., starting/stopping 24V DC motors in material handling equipment, disconnecting battery banks in UPS systems).
2. Arc Suppression: Built-in arc-extinguishing chamber (optimized for DC arcs, which are harder to quench than AC arcs) to prevent contact damage and ensure safe breaking.
3. Low Power Holding: Reduced coil holding power (≤5W) minimizes energy consumption during continuous operation, suitable for battery-powered systems (e.g., electric forklifts).

Core Advantages

1. DC-Specific Design: Tailored arc suppression and AgNi contacts address DC circuit challenges (sustained arcs, contact erosion), ensuring longer service life vs. AC contactors used in DC applications.
2. Energy Efficiency: Low holding power cuts energy use, critical for battery-operated equipment (e.g., mobile industrial robots) to extend runtime.
3. Easy Installation: DIN rail or screw mounting fits standard control cabinets; compact size saves space in dense DC control panels.
4. Robust Reliability: Wide temperature range (-25°C~+70°C) withstands harsh industrial/automotive environments (e.g., factory floors, outdoor DC power cabinets).

Applications

1. DC Motor Control: Switches power for 24V DC motors in conveyor systems, small winches, or automated guided vehicles (AGVs) — reliable start/stop control with minimal contact wear.
2. Battery Systems: Disconnects battery banks (e.g., 24V lead-acid batteries in UPS backup systems or solar energy storage) for maintenance or emergency shutdown.
3. Automotive/Heavy-Duty: Controls DC circuits in electric forklifts, construction machinery, or commercial vehicles — handles vibration and temperature fluctuations in mobile applications.
4. Rectifier & Power Supplies: Switches output from DC rectifiers (e.g., 24V DC power supplies for industrial sensors) to load circuits, ensuring safe isolation during maintenance.

Precautions

1. Coil Voltage Match: Ensure control circuit voltage is 24V DC — overvoltage (≥30V DC) damages the coil; undervoltage (≤18V DC) causes incomplete contact closure and overheating.
2. Load Type Check: Use only for resistive or slightly inductive DC loads (e.g., motors with soft starters) — avoid capacitive loads (e.g., large capacitors) which cause inrush current damage.
3. Wiring Torque: Tighten main terminals to 4-5N·m, coil terminals to 0.8-1.2N·m — loose connections cause contact overheating and arcing.
4. Arc Suppression Maintenance: Inspect the arc-extinguishing chamber annually (for high-use applications) — replace if internal components are charred or damaged.
5. Vibration Protection: In mobile applications (e.g., forklifts), use anti-vibration mounting brackets — excessive vibration loosens terminals or misaligns contacts.
6. Contact Inspection: Check main contacts every 5,000 operations — replace the contactor if contact wear exceeds 1mm (visible gap or increased resistance).

The structure and details of the product：

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