Allen Bradley 156-C3P20NCB Solid State Contactor – 3-Phase, 20A, 600V AC, 20–275V AC / 24–190V DC Control Input, Zero-Cross Switching

The Allen Bradley 156-C3P20NCB is a high-performance 3-phase solid state contactor (SSC) designed for quiet, fast, and reliable switching of AC loads in demanding industrial applications. Rated for 20A at 600V AC, it operates with a versatile AC or DC control voltage input — supporting 20–275V AC or 24–190V DC control ranges — offering exceptional flexibility for integration with modern automation systems.

Engineered with zero-cross switching technology, this contactor minimises electrical interference and extends the lifespan of connected equipment by reducing inrush current and transients. Its open-type construction allows for custom panel installation, making it ideal for motor, heating, and process control applications where long-lasting, contactless switching is required.

Technical Specifications

Model: 156-C3P20NCB Allen Bradley
Series: 156-C Solid State Contactors
Product Type: 3-Phase Solid State Contactor
Rated Operational Voltage: 600V AC
Control Voltage Range (AC): 20–275V AC (50/60 Hz)
Control Voltage Range (DC): 24–190V DC
Rated Operating Current (AC-1): 20A
Number of Phases: 3
Switching Type: Zero-cross switching
Voltage Type for Actuation: AC/DC
Mounting Type: Open type (panel mount)

Electrical & Performance Details

• Control Voltage (AC): 20 to 275V AC
• Control Voltage (DC): 24 to 190V DC
• Operating Voltage: Up to 600V AC (three-phase)
• Rated Current: 20A (AC-1 duty)
• Switching Method: Zero-cross switching for reduced EMI
• Actuation Type: AC or DC control signal
• Response Time: Ultra-fast solid-state actuation
• Function: Provides silent, contactless switching without mechanical wear

Mechanical Specifications

• Number of Phases: 3
• Mounting: Panel mount (open type, not for DIN rail)
• Housing Type: Compact solid-state enclosure with integral heat dissipation
• Cooling: Requires sufficient ventilation or heat sink for rated load
• Connections: Screw terminals for secure control and power wiring

Environmental & Application Suitability

• Typical Applications: Industrial motor control, heater control, pumps, fans, and resistive loads
• Use Case: Designed for high-reliability switching in continuous or high-cycle environments
• Switching Capability: Zero-cross switching ensures low-noise operation and reduced stress on components
• Installation Environment: Suitable for industrial control cabinets, automation panels, and OEM assemblies

Compliance & Certifications

• UL / cUL Listed: Yes
• CE Marked: Yes
• EN 60947-4-3 Compliant: Yes
• RoHS Compliant: Yes

Key Features & Benefits

✅ 3-phase solid-state design rated for 20A at 600V AC.

✅ Wide control voltage range (AC: 20–275V / DC: 24–190V) for flexible integration.

✅ Zero-cross switching reduces electrical noise and current surges.

✅ Maintenance-free operation – no moving parts or arcing contacts.

✅ Silent switching ideal for high-cycle applications.

✅ Compact, panel-mount design for custom enclosures.

✅ High reliability ensures consistent performance in demanding environments.

📦 Order the Allen Bradley 156-C3P20NCB from Drive Outlet Megastore

At Drive Outlet Megastore we offer unbeatable Allen Bradley 156-C3P20NCB prices, with fast UK & EU delivery and expert support for solid state contactors, industrial automation, and power switching systems.

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Achieve reliable, contactless load control with the Allen Bradley 156-C3P20NCB — advanced zero-cross switching technology engineered for industrial efficiency, available now from Drive Outlet Megastore.