Macromatic COKP05A62 - Overcurrent AC only
Macromatic

COKP05A62


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Overview

The Macromatic COKP05A62 is an AC-only overcurrent relay designed for precise current monitoring in industrial applications. This plug-in relay (SKU COKP05A62) monitors currents between 0.5A and 5A, making it ideal for protecting motors, transformers, and other critical loads from damaging overcurrent conditions. The relay features adjustable pick-up settings across its monitored range, with a drop-out threshold configurable between 50-95% of the pick-up value to prevent nuisance tripping. A built-in time delay of 0.1 to 10 seconds accommodates inrush currents during startup, ensuring reliable operation without false alarms. The COKP05A62 operates on 120V AC input with a tolerance of +10/-15% at 50/60 Hz, consuming less than 5VA of power. Its output contacts are rated at 10A @ 240V AC/30V DC, supporting 1/2HP @ 120/240V AC (N.O.) and 1/3HP @ 120/240V AC (N.C.). The relay includes a green LED for power indication and a red LED for relay energization status. With a mechanical life of 10,000,000 operations and full-load operations of 100,000, the COKP05A62 is built for long-term reliability. It mounts in an 8-pin octal socket (70169-D) and complies with UL, CE, and CANUS standards. Automatic reset ensures seamless operation, while the compact design fits standard industrial enclosures.
  • Monitors AC currents from 0.5A to 5A
  • Adjustable pick-up and drop-out (50-95% of pick-up)
  • Built-in time delay: 0.1 to 10 seconds
  • 120V AC input with ±15% tolerance at 50/60 Hz
  • Output contacts: 10A @ 240V AC, 1/2HP (N.O.), 1/3HP (N.C.)

Specifications

Connection Type
External Current Transformer
Connection Type
Plug-in
Current Rating
10 A
Current Rating
Adjustable (external CT for >10 A)
Frequency
50/60 Hz
Mounting Type
Plug-in
Series
COKP
Overcurrent AC only

COKP10A68

Overcurrent AC only

How to Install the COKP05A62 Current Sensing Relay

This guide provides step-by-step instructions for installing and wiring the COKP05A62 Current Sensing Relay in a suitable enclosure.

Estimated time: 45m

Tools needed:

Screwdriver, Wire strippers, Multimeter

Supplies needed:

Mounting screws, 8 pin octal socket (e.g., Macromatic 70169-D), Terminal connectors

  1. Mount the octal socket

    Install the appropriate 8 pin octal socket (such as the Macromatic 70169-D) in a suitable enclosure. Ensure it is securely fastened.

  2. Connect wiring to the socket

    Using #12-22 solid or stranded copper or copper-clad aluminum conductors, connect the wiring to the socket. Match the terminal numbers on the socket to the wiring diagram provided on the relay.

  3. Verify connections and power

    Before powering on, double-check all connections against the wiring diagram to ensure accuracy. Remove all power supplying the equipment before connecting or disconnecting wiring to prevent electrical shock.

  4. Adjust settings

    Set the pick-up current and drop-out settings according to your requirements. Ensure the relay is configured to energize when the monitored AC current exceeds the pick-up setting.

  5. Test the relay

    Power on the system and monitor the relay operation. Use a multimeter to verify that the relay energizes and de-energizes as expected based on the current levels.

Frequently Asked Questions about Macromatic

What certifications and standards do Macromatic products comply with?

Macromatic products are certified with ULus and cULus approvals for use in the United States and Canada, covering a wide range of industrial control products. Their product line includes UL-listed devices for various voltage ranges (120V, 208-277V) and NEMA enclosure types, ensuring compliance with North American industrial standards.

What industries and applications are Macromatic products used for?

Macromatic products are used across multiple critical industrial sectors, including water/wastewater, pump and motor control, irrigation, oil and gas, HVACR, material handling, lifts and elevators, and other systems requiring process control and protection. Their industrial control products deliver high-quality monitoring, control, and protection solutions for electrical processes and equipment fault protection.

What technical support does Macromatic offer?

Macromatic offers comprehensive technical support through multiple channels, including a dedicated online Technical Resource Center at macromatic.com/technical-support and direct contact with technical advisors. Their support includes engineering assistance for unique applications, help with product selection, custom-engineered solutions, and troubleshooting for product setup. Customers can reach out via their website contact form or contact their technical team directly to get expert guidance on their industrial control products.

What are the main product lines offered by Macromatic?

Macromatic offers a comprehensive range of industrial control, monitoring, and protection products across multiple product lines, including Alternating Relays, Current Sensing Relays, General Purpose Relays, Intrinsically Safe Barrier Relays, Liquid Level Control Relays, Voltage Monitor Relays, and Time Delay Relays. These products serve critical applications in industries such as water/wastewater, pump and motor control, irrigation, oil and gas, HVACR, material handling, and lift systems.

What are the key features of Macromatic products?

Macromatic products feature innovative industrial control solutions with key characteristics including precise time-based control, compact design, and comprehensive protection capabilities. Their product lines cover voltage monitoring, time delay relays, and control products for multiple industries like water/wastewater, pump and motor control, oil and gas, and HVACR. Standout features include space-saving designs, multiple time delay functions, voltage band protection, and customizable solutions with quick prototype turnaround.

What accessories are available for Macromatic products?

Macromatic offers a comprehensive line of accessories for their industrial control products, including industry-standard sockets (8-pin, 11-pin octal, and 12-pin square), back-mounted sockets for panel mounting, retainers, hold-down springs, terminal covers, and replacement terminals. These accessories are designed to simplify relay installation, replacement, and provide additional mounting and protection options for Macromatic products.

How are Macromatic products typically installed?

Macromatic products are typically installed using industry-standard 8-pin and 11-pin octal sockets, as well as 12-pin square sockets that simplify relay installation. These sockets allow for easy mounting, with back-mounted socket options enabling flange-style enclosures to be panel mounted. Additional installation accessories like retainers, hold-down springs, terminal covers, and replacement terminals are available to support precise and secure product installation.

What communication protocols do Macromatic products support?

Macromatic communication modules support multiple industrial communication protocols, including Modbus RTU, Modbus TCP/IP, PROFIBUS, PROFINET, DeviceNet, EtherNet/IP, and IEC 61850. These protocols enable flexible network integration across industrial automation systems, providing comprehensive connectivity and communication capabilities for diverse industrial applications.

What environmental ratings do Macromatic products have?

Macromatic products feature robust environmental ratings across multiple NEMA and IP standards. Most product lines offer NEMA Type 3R, 4, and 4X ratings, with specific models providing protection against dust, water, and corrosion for both indoor and outdoor applications. Select product series like DS20, DS30, DR30, and DR50 come standard as 3R with optional 4X upgrades available.