H1COL Datasheet, PDF (15/16 Pages) Altech corporation – Miniature Molded Case Circuit Breakers

Altech Busbar Systems
Configuration and Assembly of UL489 Busbars
UL489 Busbars are available in 3 different Pin Configurations per Phase, (6, 12 and 18 Pins).
The UL489 busbar cannot be cut, since the creepage and clearance distance requirements from UL are too
stringent. Therefore, to obtain the desired No. of Pins, Busbar-Pins can be overlapped as explained below:
1) Busbars are overlapped backwards to each other. Both Pins of each Busbar fit together
in the terminals of the Minature Circuit Breaker.
2 The Number of overlapping Pins of 2 Busbar must be a multiplier of the Number of
Phases to keep existing Phase sequence. (Can be overlapped by more than the number
of phases).
3) Any available combination of the 3 different Pin configurations is possible.
4) In most cases there is more than 1 combination possible.
5) For more possible configurations see Busbar Selection Table on page 21.
Configuration Examples*
16 Pins: 3 x 1P16UL3/6
1P16UL3/6
1P16UL3/6
1P16UL3/6
1 Phase
29 Pins: 1 x 1P16UL3/12 + 1 x 1P16UL3/18
1P16UL3/18
1P16UL3/12
22 Pins: 2 x 2P16UL3/12
2P16UL3/12
2P16UL3/12
2 Phase
36 Pins: 2 x 2P16UL3/12 + 1 x 2P16UL3/18
2P16UL3/18
2P16UL3/12
2P16UL3/12
27 Pins: 1 x 3P16UL3/12 + 1 x 3P16UL3/18
3P16UL3/18
3P16UL3/12
3 Phase
39 Pins: 1 x 3P16UL3/12 + 2 x 3P16UL3/18
3P16UL3/18
3P16UL3/12
3P16UL3/18
*For Questions, other configurations and detailed information please contact Altech Corp.
Altech Corp.^® • 35 Royal Road • Flemington, NJ 08822-6000 • Phone [phone] • FAX [phone] • www.altechcorp.com
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