Universal distribution blocks for copper and aluminium
Distribution blocks OJL are intended for distributing conductors with larger cross section to several smaller ones. These blocks are provided in 6 standard designs with a nominal connecting cross section of 70 mm² AL/CU (6 outputs for copper cable), 120 mm² AL/CU (11 outputs for copper cable) and 240 mm² AL/CU (7 outputs for copper cable). AF and AFS models are designed for connecting (input) of flexibars 10 x 25 mm or several bars of 1 x 25 mm.
The screws are tightened by a hexagonal key. Blocks can be installed on a standard DIN rail or can be mounted using screws on a flat solid surface. Maximum operating temperature is 80 °C. Cover sealing is possible in models AS and AFS. Housing for all design types has a protection class IP20.
Certification and product safety
Morek distribution blocks OJL are tested and certified by following standards:
EN 60947-7-1:2009 „Low-voltage switchgear and control gear – Part 7-1: Ancillary equipment – Terminal blocks for copper conductors“
EN 61238-1:2003 „Compression and mechanical connectors for power cables for rated voltages up to 30 kV (Um = 36 kV) – Part 1: Test methods and requirements“
All connectors used inside switchgears or similar appliances must fulfil these requirements.
EN 61238-1:2003 for copper and aluminium cables are divided into two classes.
| Class A (heat cycle and short-circuit tested) – These are connectors intended for electricity distribution or industrial networks in which they can be subjected to short-circuits of relatively high intensity and duration. Therefore, Class A connectors are suitable for most applications. | Class B (heat cycle tests only, not short-circuit tested) – These are connectors for networks in which overloads or short-circuits are rapidly cleared by the installed protective devices, e.g. fast-acting fuses. |
Morek distribution blocks OJL are tested and certified class A connectors.
For choosing safe and reliable connector, always make sure that the terminal is equipped with CE and Class A markings with the symbol of certifying institute, for example FI -mark.