Baomain 120V AC 4-Pole Modular Contactor, 40A 4NC Normally Closed, DIN Rail Mount for HVAC, Motor, Pump & Lighting Control BCT-40/04, HC1-40/04-120VAC

$17.99


Brand Baomain
Merchant Amazon
Category Business & Industrial
Availability In Stock
SKU B08B55B77Z
Color White
Size 40 Amp.
Age Group ADULT
Condition NEW
Gender UNISEX
Material Copper
Google Product Category Business & Industrial
Product Type Industrial & Scientific > Industrial Electrical > Controls & Indicators > Motor Contactors

About this item

Baomain 120V AC 4-Pole Modular Contactor, 40A 4NC Normally Closed, DIN Rail Mount for HVAC, Motor, Pump & Lighting Control BCT-40/04, HC1-40/04-120VAC

【4-Pole 4NC Emergency Cut-off】Equipped with 4 Normally Closed contacts for fail-safe emergency shutdown applications. Contacts remain closed during normal operation and open instantly when triggered 【120V AC 40A Rated Current】Rated 120V AC 40A (AC-7a 40A / AC-7b 18A). Features 2.1W max power, 500V insulation withstand (Ui), and 400V operating voltage (Ue)—reliable for resistive and inductive loads 【DIN Rail Ready – Plug & Play】Snaps onto standard 35mm DIN rail for quick panel installation. Compatible with AWG 12-10 flexible cords for easy wiring alongside breakers 【120V AC ONLY – Not DC Compatible】Designed exclusively for 120V AC systems. NOT for DC use. Always use with short-circuit protection (fuse/MCB) and maintain proper spacing for heat dissipation 【Safety Shutdown & Emergency Stop】Engineered for critical safety systems requiring normally closed configuration. Ideal for emergency cut-off circuits, safety interlocks, and process control where fail-safe operation is mandatory Baomain AC Contactor 4-Pole 4NC

  • This 120V AC contactor is designed for controlling household appliances, low-inductance loads, and motor-driven devices (e.g., HVAC systems, pumps, lighting circuits, and other 120V AC applications)
  • Comply with IEC61095, GB17885 standards. IEC60947-4-1, GB/T 14048.4.

  • FUNCTION AND APPEARANCE
  • Compact modular design, rail-mounted for safe, standardized installation.
  • Direct-acting inverted structure, compatible with miniature circuit breakers in control/lighting panels.
  • Supports expandable auxiliary contacts (sold separately): 1NO+1NC(B0CM8YG59G) or 2NO (B0CM8XSMBW).

  • Electrical Specifications
  • Contact: 4-Pole,4 Normally Closed (4NC)
  • Rated Coil Voltage : AC 120V; 50/60Hz;
  • Rated Current: 40A (AC-7a), 18A (AC-7b)
  • Max. Power Consumption: 2.1W
  • Rated insulation voltage: 500V (Ui)
  • Rated operational voltage: 400V (Ue)
  • Wire Capacity Range (Flexible cord): AWG 10-4

  • Mechanical Specifications
  • Size: 85 x 54 x 65mm / 3.35" x 2.1" x 2.6"(L*W*T)
  • Weight: 330g
  • Mounting: 35mm DIN Rail

  • Important Notes: AC Power Only:
    Strictly for 120V AC systems (NOT compatible with DC).
    AC contactors are designed for AC characteristics (e.g., electromagnetic systems). DC power may cause malfunction or audible noise
    Ensure stable 120VAC input; voltage fluctuations may lead to abNormally operation.
  • Safety Protection
    Must use with short-circuit protection (fuses/circuit breakers). Contactors cannot interrupt short-circuit currents.
  • Heat Dissipation Requirements
    For Class 2 Contactors: Add spacing plates when installed side-by-side with other devices to ensure proper heat dissipation.
    Applications
  • Smart home automation (lighting, HVAC schedules)
  • Motor/pump control in residential systems

  • Installation Requirements
  • For qualified electricians only
  • Verify voltage, current, and contact compatibility
  • Install only on de-energized systems
  • Comply with local electrical codes
  • Brand Baomain
    Merchant Amazon
    Category Business & Industrial
    Availability In Stock
    SKU B08B55B77Z
    Color White
    Size 40 Amp.
    Age Group ADULT
    Condition NEW
    Gender UNISEX
    Material Copper
    Google Product Category Business & Industrial
    Product Type Industrial & Scientific > Industrial Electrical > Controls & Indicators > Motor Contactors

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