Power contactors for Ac and DC - Schaltbau - #4

Except for the main contacts and the arc chute, CT1000 Series contactors are maintenance free.

The design allows easy access to all parts which require main­tenance. So when installing the contactor, make sure that there is enough space to remove and replace the arc chute with ease and that the main contacts become accessible for inspection.

The switching device meets the requirements of basic insulation. In addition to that, the bar onto which the drive of the contac­tor is mounted should be earthed in a vibration resistant way. Use of the contactor without properly mounted arc chute is not permitted. The contactor has unprotected live parts and carries a label that warns of the hazard. This caution must be observed and the label must not be removed in any way. The required clearance to other live parts and earth is also to be observed as well as the safety regulations of the applicable standards.

Before initial start up make sure that:

• the arc chute is mounted properly and the red levers are in locked position

• the contactor is earthed (PE terminal on mounting plate)

Coil suppression for reducing surges when the coil is switched off is optimally attuned to the contactor's switching behaviour. Caution: Parallel connection with a simple diode will override the existing coil suppression.

1. Push both release sliders in the direction indicated by the arrow and hold them in this position.

2. Move all four levers for unlocking the arc chute in the direc­tion indicated by the arrow.

3. The arc chute incorporating the stationary main contacts can now be lifted from the contactor.

1. Mount the arc chute onto the magnetic drive. Note: The arc chute has keys on one side to fit into slots on the corre­sponding side of the contactor. So you cannot mount it the wrong way round.

2. Move all four levers for unlocking the arc chute into the original position.

3. Check: The arc chute is locked properly, if all four lock bars click into place and cannot be opened without pushing the release slider.

Protective cover auxiliary switches: Dismount arc chute first, then loosen knurled head screws and remove protective cover.

Protective cover coil terminals: Slightly lift protective cover at end of cable entry and take it off. The cover is fixed to the mounting plate by means of a permanent magnet.

Protective cover auxiliary switches: Position protective cover and screw in both knurled head screws. Then mount arc chute.

Protective cover coil terminals: Introduce protective cover into the groove of the coil drive and locate in position. The cover is fixed to the mounting plate by means of a permanent magnet.

Release slider to unlock arc chute

Lockbarwlth Indicator left: open position, right: locked position

Arc chute

Vlain terminal

Coil terminal WAGO 264 (ind. cover]

Mounting plate screw 4x M6

Aux. contact block (ind. cover]

»H« horizontal (yellow lock bars) Mounting holes

»V« vertical (red lock bars)

(bottom view)

Circuit diagram, CT1115/04, CT1130/04 (Single pole version)

A1

13 11+ 23 21+ 33 31+ 43 41 +

with auxiliary switches S1, S2, S3 and S4: 4 x S826:

I 

14+12 24+22 34+32 44+42 S1 S2 S3 S4

A2

with auxiliary switches S1 and S2: 2 x S870 (a₁ and b₀) as well as S3 and S4: 2 x S826:

A1

33 31+ 43 41 +

2₂ 2 ^{14 22 34+32} 44+42

S1 S2 S3 S4