UL 891 Switchboard

Provide the system voltage, phase/wire configuration, main bus rating, SCCR requirement, main device, feeder breaker quantities and ratings, enclosure type, and required accessories. A one-line diagram and project specification. Also provide the Incoming Top or Bottom. Or if the Service entrance is on left or right. This is information we needed prior to launching our LSPE-S software. Now the Customers and build themselves.

Yes. Supported UL 891 configurations may include ACBs and MCCBs. Available breaker frames, ratings, mounting arrangements, and accessories depend on the applicable approved LS construction.

Changes must remain within the applicable approved UL construction. Changes to critical components, bus arrangements, structures, ratings, or other construction details should be reviewed by LS ELECTRIC before implementation.

Yes. Applicable drawings, technical information, and program documentation are provided based on the partner's program scope and supported product configuration.

No. Breaker selection must comply with the applicable LS/UL construction. A breaker should not be substituted solely because its ampere or interrupting rating appears suitable.

UL 67 applies to panelboards, while UL 891 applies to dead-front switchboards. Product selection depends on the equipment construction, ratings, application, and project requirements.

Indoor NEMA 1 and outdoor NEMA 3R configurations may be available depending on the applicable LS product and approved construction. Confirm the required enclosure type during configuration or quotation. If you using LSPE-X, only NEMA 1 is available. The customer may add the NEMA 3R in house.