SE Digest 178

Accessories and Special Features Class 3110 / Refer to Catalog 3100CT1602

Heavy Duty Safety Switches

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Key Interlock Systems

Factory-installed only on heavy duty safety switches and double throw safety switches. Interlocks are used to prevent the authorized operator from making an unauthorized operation. Not available on NEMA Type 4X Fiberglass, Krydon or NEMA Type 7 and 9 switches. The key interlock system is a simple and easy method of applying individual key interlock units and assemblies to the above equipment so as to require operation in a predetermined sequence. UL Listed. Quoting: Contact Schneider Electric for catalog number, availability, and pricing prior to quoting a job. Detailed information is required before an order can be processed. Please see Supplemental Digest Section 2 for further information. Use these suffixes on switch catalog numbers: • KI = 1 lock per switch • KI2 = 1 lock with 2 cylinders (2 keys) per switch • KIKI = 2 separate locks per switch Lock-ON Provisions Lock-OFF provisions are standard on all heavy duty safety switches. Provision for one 3/ 8 inch hasp padlock is available factory-installed on 30–1200 A, NEMA Type 1, 3R, 4-4X 5 stainless steel 12 and 12K switches. Not avaliable on NEMA Type 4X, Fiberglass, Krydon or NEMA Type 7 and 9 switches. This modification will allow the switch to be locked in the “ON’’ position. UL Listed. To order, add suffix SPLO to standard catalog number. Example: H364-SPLO

Key Interlock System

3 SAFETY SWITCHES

3-19

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11/20/2019