Test Terminal Blocks (TTBs) are used to test and calibrate electrical devices like meters and relays without disconnecting them from the circuit.Test terminal blocks commonly used in control panels and switch boards.
Here are some features of test terminal blocks:

• Mechanism: TTBs have a mechanism that allows technical personnel to disconnect and reconnect the contacts inside the Test Terminal Block.
• Ease of use: TTBs are designed to be easy to use, allowing for simple linking and de-linking of connections Test Terminal Block.
• Projection mounting: TTBs can be mounted for projection with either front or back connection possibilities Test Terminal Block.
• Housing: TTBs can be made of non-inflammable and non-higroscopic phenolic compounds Test Terminal Block.
• Parts: TTBs can be made with high grade electrically conductive brass parts Test Terminal Block.
• Contact resistance: TTBs can have very low contact resistance Test Terminal Block.