CMK633 3 Circuit Lever Wire Connector for Efficient Electrical Wiring
TheJINH CMK633 lever wire connector is a compact three-circuit electrical connection solution designed for installations where convenient operation, reliable contact, and efficient use of space are important. As one of the models in the JINH CMK63 series, CMK633 provides a practical alternative to traditional screw-type terminal blocks for a wide range of electrical wiring applications.
Its lever-operated connection structure allows installers to handle wires quickly without relying on conventional screw tightening. The orange levers are easy to identify and operate, making the connector suitable for both new installations and wiring work that may require later inspection or adjustment.
With three independent circuits in one compact housing, CMK633 can help organize electrical connections while reducing the amount of space required around the wiring point.
Three-Circuit Design for Organized Wiring
The CMK633 is designed with 3 circuits, providing three separate connection positions within one compact terminal block.
This configuration can be useful when several conductors need to be connected or organized in the same area. Instead of using multiple individual connection components, installers can use one three-circuit connector to keep the wiring arrangement more compact.
The product measures approximately 21.8 × 19.2 × 10.3 mm, making it suitable for electrical enclosures and equipment where installation space is limited.
The compact structure can be particularly useful in junction boxes, lighting equipment, control cabinets, electrical panels, and internal equipment wiring.
Simple Lever Operation
One of the main features of CMK633 is its lever-operated connection mechanism.
During installation, the orange lever can be opened to prepare the connection position. After the conductor is inserted, the lever is returned to its operating position to secure the wire.
This design provides a straightforward alternative to traditional screw terminal connections. Installers do not need to repeatedly tighten screws during routine wiring work, which can make larger wiring jobs more convenient.
The lever structure is also useful when wiring needs to be inspected, changed, or maintained. Wires can be released through the operating mechanism, making adjustments easier when compared with connections that require repeated screw removal.
For electricians and equipment manufacturers handling frequent wiring tasks, a simple operating method can help improve installation efficiency.
Transparent Polycarbonate Housing
CMK633 uses a transparent polycarbonate housing, providing a protective structure around the internal connection components while allowing the connection area to remain visible.
The transparent housing can make it easier for installers to check whether the conductor has been positioned correctly during installation. This is especially useful when multiple connectors are installed close together.
The operating levers are manufactured from Polyamide POM, providing a durable interface for repeated manual operation.
Inside the connector, tinned copper conductive parts are used to provide electrical conductivity and help improve resistance to surface oxidation.
The contact springs are made from AISI 301 stainless steel, providing the mechanical force required to maintain contact with the conductor.
These material choices are intended to support stable performance during normal electrical installation and operating conditions.
Flexible and Rigid Wire Compatibility
CMK633 supports both flexible and rigid conductors, allowing it to be used across different electrical wiring projects.
The main electrical specifications include:
- Number of circuits:3
- Flexible wire:0.2–2.5mm²
- Rigid wire:0.2–4mm²
- Rated voltage:450V
- Rated current:32A
- Housing material: Transparent polycarbonate
- Lever material: Polyamide POM
- Conductive parts: Tinned copper
- Contact spring: AISI 301 stainless steel
- Working temperature: -40°C to 105°C
- Stripping length: 11mm / 0.43 inch
- Product size: 21.8 × 19.2 × 10.3 mm
The combination of flexible and rigid wire compatibility makes CMK633 suitable for different types of electrical installation work.
As with any electrical connector, the conductor should be prepared according to the specified stripping length and installed correctly to achieve the intended connection performance.
A Practical Alternative to Screw Terminal Blocks
Traditional screw terminal blocks have been widely used in electrical installations for many years. However, screw connections require manual tightening and may involve additional tools during installation.
CMK633 uses a lever-based connection structure, providing a more convenient method for repetitive wiring work.
For installers working on lighting systems, control equipment, junction boxes, or electrical cabinets, reducing the number of individual installation steps can make the wiring process more efficient.
The lever also provides convenient access when wires need to be disconnected or repositioned during maintenance.
CMK633 is therefore suitable for applications where fast operation, organized wiring, and compact installation are important considerations.
Applications of CMK633
The three-circuit structure makes CMK633 suitable for many electrical connection applications, including:
- LED lighting systems
- Indoor and commercial lighting
- Junction box wiring
- Building electrical installations
- Electrical control cabinets
- Control panels
- Automation equipment
- Household electrical appliances
- Equipment internal wiring
- Commercial electrical systems
- General industrial wiring
In lighting applications, the compact three-circuit configuration can help simplify connections inside relatively small spaces. In electrical cabinets and control equipment, the lever design can make wiring inspection and adjustment more convenient.
For equipment manufacturers, the connector can also be incorporated into internal wiring systems where a compact and accessible electrical connection method is required.
JINH CMK63 Series Lever Wire Connectors
CMK633 belongs to the JINH CMK63 series, which includes four circuit configurations:
- CMK632 – 2 circuits
- CMK633 – 3 circuits
- CMK634 – 4 circuits
- CMK635 – 5 circuits
The four models share a similar product concept while providing different circuit capacities for different wiring requirements.
This allows distributors, installers, and equipment manufacturers to select a suitable circuit configuration without changing to a completely different connection system.
JINH specializes in the manufacturing of electrical connectors and terminal blocks for international markets. We support distributors, wholesalers, electrical contractors, equipment manufacturers, and other professional customers.
In addition to standard products, JINH can provide OEM and ODM services, including product specifications, packaging, and other customized requirements based on project needs.
With its three-circuit configuration, compact dimensions, lever-operated structure, and compatibility with both flexible and rigid wires, CMK633 provides a practical solution for efficient electrical wiring and organized connections.