4mm² Angular Feed Through Spring Clamp Terminal Block – AS4

Product Description

The AS4 End Stop is a durable and high-performance DIN rail end clamp accessory designed to securely lock terminal blocks and electrical components in position on DIN rails inside electrical panels, switchgear assemblies, automation systems, machine control cabinets, and industrial wiring enclosures. It is an essential panel accessory used to prevent terminal blocks from sliding or shifting along the DIN rail due to vibration, wiring pressure, maintenance activities, or industrial operating conditions. The AS4 End Stop helps maintain organized panel wiring, improves electrical safety, and provides strong mechanical support for DIN rail mounted terminal block assemblies.

In modern electrical panel building, terminal blocks are mounted side by side on DIN rails to create compact and organized conductor termination systems. However, without proper locking accessories, these terminal blocks can shift from their position during wiring, maintenance, or due to machinery vibration. This can create loose spacing, disorganized panel layouts, and potential mechanical stress on conductor connections. The AS4 End Stop solves this issue by acting as a secure stopper at the end of terminal block rows, ensuring the entire assembly remains firmly fixed in position.

The AS4 End Stop is specially designed to provide strong mechanical locking support for DIN rail mounted terminal blocks and electrical accessories. Once mounted and tightened on the DIN rail, it prevents the movement of adjacent terminal blocks and ensures a stable electrical assembly. This makes it an essential accessory for electricians, switchgear manufacturers, automation engineers, and panel builders who require professional and reliable panel wiring systems.

One of the major advantages of the AS4 End Stop is its simple and secure installation mechanism. It can be mounted easily on standard DIN rails and tightened using a screw locking mechanism. Once installed, the end stop grips the DIN rail firmly and provides strong holding force to support adjacent terminal block assemblies. This locking action improves mechanical stability and prevents terminal block movement in demanding industrial applications.

The AS4 End Stop is built using high-quality polyamide insulated housing with metal clamping components, providing excellent electrical insulation, mechanical durability, heat resistance, and flame retardant protection. The insulated body ensures safe use inside electrical panels, while the metal locking clamp provides secure DIN rail grip and strong mechanical support.

Another key advantage of the AS4 End Stop is its compact design, which occupies minimal panel space while delivering reliable locking performance. Since electrical panels often have limited installation space, compact accessories like the AS4 help maintain organized panel layouts without affecting wiring density. Its small footprint makes it suitable for compact control cabinets, switchgear panels, machine control systems, and industrial distribution boards.

The grey color design of the AS4 allows it to blend neatly with industrial panel layouts while still being easily identifiable during installation and maintenance work. This improves panel aesthetics and helps electricians quickly identify end locking points in terminal block assemblies.

The AS4 is designed for DIN 35 rail mounting, which is the industry standard used in most industrial electrical panels and control systems. Its universal DIN rail compatibility makes it suitable for a wide range of electrical panel building applications and conductor termination systems.

In industrial environments where electrical panels are exposed to machine vibration, continuous operation, and mechanical stress, terminal blocks can gradually shift if not secured properly. The AS4 End Stop prevents this movement and maintains fixed terminal block positioning, helping improve conductor stability and overall panel reliability.

The screw locking mechanism of the AS4 ensures secure clamping force and long-term holding performance. Electricians can tighten the locking screw using a standard screwdriver, creating a firm grip on the DIN rail. This locking mechanism is reliable and easy to maintain.

The polyamide insulated body provides excellent resistance to heat, flame, and industrial environmental conditions. This makes the AS4 suitable for electrical systems operating in harsh industrial environments where safety and durability are critical.

The AS4 End Stop is widely used in electrical control panels, switchgear assemblies, PLC panels, industrial automation systems, machine control cabinets, power distribution boards, OEM electrical assemblies, renewable energy systems, commercial electrical installations, and industrial machinery wiring applications where secure terminal block locking is essential.

For electricians, panel builders, automation engineers, and switchgear manufacturers, the AS4 End Stop is a small but critical panel accessory that improves wiring organization, panel safety, and terminal block stability.

Whether used in industrial control cabinets, automation systems, switchgear panels, machine control circuits, or electrical distribution boards, the AS4 End Stop delivers dependable DIN rail locking support, organized panel wiring, and long-term mechanical stability for professional electrical applications.