The CM4SY is a 4 sq.mm panel mount spring clamp terminal block in yellow colour, specially designed for compact electrical wiring applications in control panels, industrial automation systems, switchgear assemblies, instrumentation circuits, and machine wiring systems. This terminal block is engineered to provide secure conductor connection, vibration-resistant clamping, and organized panel wiring in demanding industrial electrical environments.
Unlike conventional screw terminal blocks, the CM4SY uses spring clamp connection technology, which ensures strong conductor retention without the risk of loosening due to vibration or thermal expansion. This makes it particularly useful in industrial applications where machinery movement, continuous operation, and fluctuating temperatures can affect wiring reliability. The spring clamp mechanism maintains consistent contact pressure, improving electrical continuity and reducing maintenance requirements.
The yellow colour housing (Y variant) is specifically used for visual circuit identification and panel coding, helping electricians and panel builders separate specific circuits, signals, or control functions inside electrical panels. In complex industrial cabinets, colour-coded terminal blocks improve maintenance efficiency and reduce wiring errors during troubleshooting or servicing.
One of the biggest advantages of the CM4SY is its compact panel mount design. In applications where space is limited, this terminal block provides efficient wiring while maintaining a secure and professional panel layout. It features side wire entry configuration, making installation convenient and improving cable routing inside compact enclosures. The modular design also allows multiple terminal blocks to be assembled into multi-pole terminal block groups depending on circuit requirements.
The CM4SY is designed for feed-through electrical connection, allowing safe conductor-to-conductor continuity in control circuits, signal wiring, and power distribution systems. It supports wire sizes from 0.2 mm² to 4 mm² (24–10 AWG), making it suitable for a wide range of industrial electrical applications. The spring clamp connection ensures fast installation while reducing wiring time compared to traditional screw-type systems.
Manufactured using high-grade polyamide insulation material, the CM4SY offers excellent dielectric strength, heat resistance, and mechanical durability. This ensures safe long-term operation in industrial environments where exposure to heat, electrical load, and mechanical stress is common. The housing also provides insulation protection against accidental contact and short circuits.
The terminal block is rated for 630V IEC voltage and 32A current capacity, making it suitable for industrial low-voltage applications, automation panels, machine control systems, instrumentation panels, and electrical distribution circuits. Its 6KV surge voltage rating further enhances reliability in electrically demanding environments.
The CM4SY is widely used in:
With its spring clamp technology, compact panel mount design, yellow circuit identification colour, and industrial-grade construction, the CM4SY is an ideal terminal block solution for professional electrical panel builders and industrial automation applications.
| Specification | Details |
|---|---|
| Product Model | CM4SY |
| Product Type | Panel Mount Spring Clamp Terminal Block |
| Colour | Yellow |
| Connection Type | Spring Clamp |
| Product Function | Feed Through |
| Rated Voltage | 630 V |
| Rated Current | 32 A |
| Wire Size | 0.2 – 4 mm² |
| AWG Range | 24 – 10 AWG |
| Wire Entry | Side Entry |
| Mounting Type | Free Floating / Surface / Panel Mount |
| Housing Material | Polyamide |
| Rated Surge Voltage | 6 KV |
| Pollution Degree | 3 |
| Width | 7 mm |
| Height | 23 mm |
| Length | 33.7 mm |
| Stripping Length | 10 mm |
The CM4SY is ideal for:
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