The CKDC2 Series contactor is engineered for AC circuits up to 690V and DC circuits up to 440VDC. In the AC3 use category, with a rated circuit voltage of 380V and current of 85A, it handles remote on-off switching and frequent start/stop control of motors. The coil operates at 230VAC 50/60Hz, making it compatible with standard European single-phase control circuits.

The contactor accepts auxiliary contact blocks and air-delay contact modules for expanded functionality, including AC and DC coil control, reversible coil terminals, and pneumatic timing modules. When combined with a thermal overload relay it forms a complete electromagnetic motor starter with overload protection.

Key Features

• 3NO main contacts for 3-phase motor switching
• AC3 use category — rated for frequent inductive motor load switching
• 230VAC 50/60Hz coil voltage for compatibility with standard control circuits
• Accepts auxiliary and air-delay contact blocks for expanded wiring options
• Cable cross-section range: 1–10mm² for flexible conductor sizing
• Tightening torque: 1.5–2.5Nm for secure terminal connections

Product Benefits

• 40A current rating supports motors up to 18kW at standard three-phase voltages
• Compatible with DC and AC coil control modules for versatile installation
• Reversible coil terminals simplify field wiring in complex panel layouts
• Space-saving DIN-rail mounted control modules reduce panel footprint
• Pair with a thermal overload relay to create a full electromagnetic starter with overload protection

Technical Specifications

• Model: CKDC2A37/P7
• Contacts: 3NO
• Product Type: Motor protection power relay contactor
• Rated Current: 40A
• Power Rating: 18kW
• Use Category: AC3
• Coil Voltage: 230VAC 50/60Hz
• AC Voltage Range: up to 690V
• DC Voltage Range: up to 440VDC
• Cable Cross-Section: 1–10mm²
• Tightening Torque: 1.5–2.5Nm

Why You'll Love It

• Modular design allows auxiliary contacts and timing modules to be added without replacing the main unit
• Broad voltage range (AC up to 690V, DC up to 440V) covers diverse industrial and commercial applications
• Standard DIN-rail and panel mounting keeps installation straightforward for qualified electricians
• Package includes 1× CKDC2A37/P7 relay contactor