1977477-3

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Terminal blocks are electrical connections between disposable and detachable components. They provide a secure connection, ensure a positive electrical contact between the conductor and the device, and can hold several terminal blocks in one place. When multiple wires enter or leave a device, this type of terminal block can provide connection points for all of the wires. Barrier blocks are a type of terminal block used for applications where high current flow is required.

The barriers for the 1977477-3 terminal blocks are physically placed between terminals to obtain the best electrical isolation. This is achieved by barrier fingers and slots of various depths and sizes to create a safe environment. The barrier material is normally cross-linked polymeric rather than stainless steel. This protects against corrosion, abrasion, and ultra-violet exposure.

The barriers themselves are designed to ensure that different types and sizes of contacts can still touch and establish a good electrical connection. The allowance for contact is about 500 µm ( or 0.5 mm). This means that the contact size for different terminal points can vary without compromising the contact quality. This helps to ensure that the overall size of the terminal blocks remains the same and that additional space between the contacts is unnecessary.

The 1977477-3 terminal block also features a spring-cage clamping mechanism. This helps to ensure the connection between the contact and the barrier is secured in place. The spring cage is designed to provide optical and physical protection while under constant use. The spring cage is also adjustable in order to compensate for load variations. It also helps to reduce vibration and to ensure that the terminal block is well secured.

The 1977477-3 terminal block is rated for currents up to 20A and a voltage of 250V. The barrier blocks are also suitable for direct soldering and for cleaning with contacts. The terminals blocks also meet the requirements of UL and VDE. These terminal blocks are specifically designed for gas-filled control panels, HMI’s and circuit boards, and they can be used in a variety of applications.

In summary, 1977477-3 terminal blocks are designed to provide a secure and robust connection for applications where high current is required. The blocks feature barriers between terminals for the best electrical isolation, as well as a spring-cage clamping mechanism to ensure the connections are secure. The terminal blocks can be used in a variety of applications and they meet the requirements of UL and VDE, making them suitable for industrial applications.

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