ABB 1SBL241201R8400 4-pole contactor

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ABB 1SBL241201R8400 4-Pole Contactor

Product Description

Key Specs

• Electrical Ratings:
  • Control Circuit (Coil): Rated voltage 230V AC (50/60Hz); coil power consumption: 18VA (pick-up), 3VA (holding) — low energy consumption for continuous operation.
  • Main Circuit (AC-3 Duty Category):
    • Rated operating voltage (Ue): 400V AC (max 690V AC).
    • Rated operating current (Ie): 40A (at 400V AC, 50Hz, for motor control).
    • Rated breaking capacity (Icu): 50kA (at 400V AC, 50Hz, 0.9 power factor).
  • AC-1 Duty Category (Resistive Loads): 63A (at 400V AC).
• Contact Configuration: 4 poles (4P), all normally open (NO) — suitable for 3-phase circuits with neutral or 4 independent single-phase circuits.
• Contact Material: Silver-tin oxide (AgSnO₂) — high arc resistance, low contact resistance, and long electrical life for industrial loads.
• Mechanical & Environmental:
  • Mechanical life: ≥1,000,000 operations; electrical life (AC-3): ≥100,000 operations.
  • Protection degree: IP20 (panel-mounted, protected against finger contact and solid objects ≥12mm).
  • Operating temperature: -25°C~+60°C, 5%-95% RH (non-condensing, no condensation).
  • Dimensions (W×H×D): 85mm×105mm×75mm; weight ~650g.
• Mounting & Terminals:
  • Mounting: 35mm DIN rail (EN 60715) or direct screw mounting (M4 threaded holes).
  • Terminals: Screw-type terminals (main poles: M6 thread, suitable for 4-25mm² copper cables; coil terminals: M3 thread, for 0.5-1.5mm² cables).

Core Functions

1. 4-Pole Load Switching: Controls 3-phase loads with neutral line (e.g., 3-phase motors with 24V AC auxiliary fans) or 4 separate single-phase loads (e.g., lighting circuits, small pumps) via one contactor, simplifying cabinet layout.
2. Arc Suppression: Built-in arc chutes (per pole) optimize arc quenching for AC circuits, preventing contact erosion and ensuring safe breaking even under inductive load conditions (e.g., motor startup/shutdown).
3. Energy-Saving Coil: Low holding power (3VA) reduces steady-state energy consumption vs. traditional contactors, ideal for applications requiring long-term continuous operation (e.g., HVAC systems).
4. Status Indication: Integrated LED coil power indicator (green) — provides visual confirmation of contactor activation, simplifying on-site troubleshooting.

Core Advantages

1. 4-Pole Versatility: Eliminates the need for multiple 1-pole/3-pole contactors for mixed 3-phase + neutral or multi-single-phase loads, saving cabinet space and wiring costs.
2. Durable Contacts: AgSnO₂ material resists welding and wear, ensuring reliable operation in high-cycle applications (e.g., automated production line motors with frequent start/stop).
3. Wide Voltage Adaptability: Max 690V AC main circuit voltage supports industrial high-voltage loads (e.g., 690V 3-phase pumps in water treatment plants).
4. Easy Integration: DIN rail mounting fits standard control cabinets; compatible with ABB thermal overload relays (e.g., TA25DU) for motor overload protection, forming a complete motor control unit.

Applications

1. 3-Phase Motor Control with Neutral: Controls 400V AC, 40A motors (e.g., conveyor motors in logistics centers) while switching the neutral line for auxiliary components (e.g., motor temperature sensors), ensuring full circuit isolation during maintenance.
2. Commercial Building HVAC: Manages 3-phase air handlers (400V AC) with single-phase control circuits (230V AC fans) — 4 poles integrate main load and auxiliary circuit switching, reducing panel complexity.
3. Multi-Circuit Lighting Control: Switches 4 independent single-phase lighting circuits (e.g., warehouse zone lighting) via one contactor, enabling centralized on/off control and energy management.
4. Infrastructure Power Distribution: Controls mixed loads in small data centers or telecom cabinets (e.g., 3-phase UPS output + single-phase server power supplies) — 4 poles ensure balanced load switching and safe isolation.

Precautions

1. Coil Voltage Matching: Ensure control circuit voltage is 230V AC — overvoltage (≥253V AC) damages the coil; undervoltage (≤207V AC) causes incomplete contact closure, leading to overheating and contact burnout.
2. Duty Category Selection: Use AC-3 category only for motor control; avoid AC-1 resistive loads exceeding 63A (e.g., large heating elements) — overloading causes contact damage.
3. Wiring Torque: Tighten main terminals to 8-10N·m, coil terminals to 0.8-1.2N·m — loose connections generate heat and increase contact resistance.
4. Neutral Pole Usage: When controlling 3-phase + neutral circuits, ensure the neutral pole is correctly wired (typically marked "N" or pole 4) — incorrect neutral connection may cause unbalanced loads or equipment damage.
5. Environmental Protection: Avoid installing in dusty, oily, or humid environments (IP20 not dust/waterproof); use cabinet filters or enclosures if exposed to such conditions.
6. Overload Protection: Always pair with a compatible thermal overload relay (e.g., ABB TA25DU-40) for motor control — the contactor alone does not provide overload protection, which may lead to motor burnout.

The structure and details of the product：

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