BAOMAIN 12V AC 4-Pole 20A Modular Contactor, 4NC, DIN Rail Mount | BCT-20 4P 20Amp 4 Normally Closed AC12V Contactor For HVAC,Motor,Pump,and Lighting($12.69Value)

Description

【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 【12V AC 20A Rated Current】Rated 12V AC 20A (AC-7a 20A / AC-7b 7A). Features 1.6W 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 【12V AC ONLY – Not DC Compatible】Designed exclusively for 12V 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

AC model for household appliances, motors (HVAC/pumps), and lighting control

Meets IEC61095/GB17885 and IEC60947-4-1/GB/T 14048.4 standards

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 12V; 50/60Hz;

Rated Current: 20A (AC-7a), 7A (AC-7b)

Max. Power Consumption: 1.6W

Rated insulation voltage: 500V (Ui)

Rated operational voltage: 400V (Ue)

Wire Capacity Range (Flexible cord): AWG 12-10

Mechanical Specifications

Size: 82 x 36 x 65mm / 3.23" x 1.42" x 2.56"(L*W*T)

Weight: 210g

Mounting: 35mm DIN Rail

Important Notes: AC Power Only: Strictly for 12V 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 12VAC 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