Square D (Schneider Electric) ZCPEN12 Cable Gland Entry. Telemecanique Square D™ Cable Gland Entry, For Use with: OsiSense® XCKP/ZCP Series Limit Switch, 1/2 in NPT, Plastic, 1.2 in L x 1.2 in W x 1.2 in H. Additional Description: SQD -ZCPEN12 LIMIT SWITCH 1/2 NPT CONDOIT ZCP. Catalog Description: Cable gland entry, 1/2'' NPT, for limit switch, plastic body.