1, structure and working principle 3KL and 3KM switch isolator is designed for outdoor installation of the fuse. 3KA isolator on a broken link, 3KE switch isolator with fixed contacts, the two are not fused isolator switch.
These contacts and the arc of contact by the main contact form. If you need additional fuses, these fuses must be installed separately.
Compared with 3KL switch isolator, 3KM isolation switch in the back of the plug-type connector with insulation, and the most suitable for installation in vertical busbar connection type motor control center (MCC) .3 KM switch isolator cabinet to be installed In the plug-in framework, and inserted through the busbar of the cabinet within the framework of realization of the connection with the parent row. Pull out type unit, the formation of additional insulation distance.
3KL5, 3KL6, 3KM and 3KA isolation switches are for the three, some types can be installed at level 4 (see page 12 Annex). 3KL70 isolation switch is usually 4 to (NFC fuse for 3).
Isolation when 3KL and 3KM switch off, the fuse without electricity. All 3K isolation switch when the power failure, can use the padlock to be fixed. However, sometimes for as 3KL6, 3KL7 and 3KE need door coupling rotary mechanism requires a lock on the 3KE observation masks (3KE).
These organizations operate with 90-degree angle, and equipped with rapid cutting and closing device.
All 3K switch isolator suitable for use in any climate, and in accordance with IEC 947-1 Standard , IEC 947-3 standards and DIN VDE 0660 Part 107 standards. Meanwhile, according to DIN VDE0113, 3K switch can be used as the main co-switch and emergency stop switch.
2, other types of 3KL5, 3KA and 3KE independent content with their isolation switch plate (8HU type) or insulation (8 HP Type) box. Please check selection and ordering data.
3, Annex Auxiliary switch. About to be installed 3KL5 and 3KL6 isolation switch on the number of auxiliary switch, see the technical data.
3KL5, 3KL6, 3KM, 3KA and 3KE isolating switch can be chosen to rotate the front operating mechanism, or as needed, select 8UC6 type door coupling rotary isolating switch operating structure .3 KL70 frequently used door coupling rotary mechanism, and can be equipped with a front or side operating mechanism.
Plus axis adjustable switch installed in the switch cabinet depth. May be necessary to provide additional support or guide the long axis.
For 3KA5, 3KL5 and 3KE isolation switch, which provides back-handed operation assembly kit. The isolation switch can be used as the main co-switch. Or request for emergency stop switch. Thus, these devices can be fixed to the wall or after the switch cabinet wall, and can be operated from the rear, no door coupling.
For 3KE provide electrical isolation switch operating mechanism, switch operating mechanism (for two 3KE isolation switch for the load switch) can switch the source rod must be used with the same or different rated current while switching the two isolation switch. For the switch operating mechanism, with two types you can bring up the rear with and without co-first switch device (in the first case, the two switch isolator in the middle position when in a disconnected state, and Break-together for the first device without conversion switch, two switch isolator can be short-lived closed).
3K disconnector additional accessories (eg, separated by plate-like contact harp cover). However, some parts have been included in the scope of supply isolating switch.
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