Measuring and Disconnect Terminal Blocks
A measuring disconnect terminal block is a screw-connection DIN rail terminal block whose built-in disconnect mechanism allows the line to be isolated without removing conductors and a measuring instrument to be connected to the circuit. It is used for commissioning, testing and maintenance work in the secondary circuits of current and voltage transformers and in meter, instrument and protection relay connections. In this category, Onka MRK series 6 mm² (41 A) and 10 mm² (57 A) terminal blocks are listed in types without a test probe, with a single test probe and with a double test probe, with gray and beige housings and a 750 V rated voltage. Choose the cross-section by the secondary circuit conductor, the rated current by the circuit current, the number of test probes by how you connect the instrument and the housing color by grouping within the panel. A standard feed-through terminal block does not replace this terminal block in instrument transformer secondary circuits, since it has no disconnect and measuring mechanism.
Products
- Onka MRK Single Test Probe Measuring & Disconnect Terminal Block 6mm2 41A Gray — Onka · SKU: 1010213 · TRY 134.32 · Made to order
- Onka 10mm2 MRK Double Test Probe Measuring & Disconnect Terminal Block Gray — Onka · SKU: 1010232 · TRY 250.17 · Made to order
- Onka 10mm2 MRK Single Test Probe Measuring & Disconnect Terminal Block Gray — Onka · SKU: 1010230 · TRY 177.74 · Made to order
- Onka MRK Probeless Measuring & Disconnect Terminal Block 6mm2 Gray — Onka · SKU: 1010217 · TRY 111.80 · Made to order
- Onka MRK Probeless Measuring & Disconnect Terminal Block 6mm2 Beige — Onka · SKU: 1010211 · TRY 111.80 · Made to order
- Onka MRK Double Test Probe Measuring & Disconnect Terminal Block 6mm2 41A Gray — Onka · SKU: 1010215 · TRY 157.04 · Made to order
- Onka MRK Double Test Probe Measuring & Disconnect Terminal Block 6mm2 41A Beige — Onka · SKU: 1010212 · TRY 157.04 · Made to order
How to choose Measuring and Disconnect Terminal Blocks
A measuring disconnect terminal block is a screw-connection DIN rail terminal block whose built-in disconnect mechanism allows the line to be isolated without removing conductors and a measuring instrument to be connected to the circuit. It is used for commissioning, testing and maintenance work in the secondary circuits of current and voltage transformers and in meter, instrument and protection relay connections.
- Clarify whether the task is connection, cable routing, enclosure distribution or termination.
- Match dimensions, thread standard, conductor cross-section and IP rating with the cable and panel.
- Choose housing material and pack quantity according to the mounting environment.
Frequently asked questions
What is Measuring and Disconnect Terminal Blocks and where is it used?
A measuring disconnect terminal block is a screw-connection DIN rail terminal block whose built-in disconnect mechanism allows the line to be isolated without removing conductors and a measuring instrument to be connected to the circuit. It is used for commissioning, testing and maintenance work in the secondary circuits of current and voltage transformers and in meter, instrument and protection relay connections.
What should I compare when choosing Measuring and Disconnect Terminal Blocks?
Choose the cross-section by the secondary circuit conductor, the rated current by the circuit current, the number of test probes by how you connect the instrument and the housing color by grouping within the panel.
Where can I find technical details for Measuring and Disconnect Terminal Blocks products?
A standard feed-through terminal block does not replace this terminal block in instrument transformer secondary circuits, since it has no disconnect and measuring mechanism.