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UMK 33 Relay Base Data Sheet 1092A January 2000 Features • Accepts up to 4 PDT relay • Pluggable base accepts Potter & Brumfield KHA/KHS series and Aromat HC4 series relays • DIN-rail mounted • Coil status indication for 24 V dc or 120 V ac • Separation of coil and contact wiring Description Figure 1. UMK 33 Relay Base The UMK 33 base manufactured by Phoenix Contact allows for a variety of relays to be utilized within one base. The module will accept the following relay contact configurations: 1 PDT, 2 PDT, 3 PDT and 4 PDT. Table 1. UMK 33 Relay Base Specifications The UMK 33 standard relay base can be used with any coil voltage. Status indication bases are also available for 24 V dc or 120 V ac. For hazardous applications, the UMK 33 base can be fitted with the KHS series relay from Potter & Brumfield. This relay is hermetically sealed and UL approved for Class 1 Division 2 hazardous locations. A relay mounting clip must be used for this application to prevent accidental removal of the relay during operation. Phoenix Contact Inc. • P.O. Box 4100 • Harrisburg, PA 17111 • Phone: (717) 944-1300 • Fax: (717) 944-1625 1 UMK 33 Relay Base Figure 2. UMK 33 Relay Base Dimensions Ordering Information Standard Base (no indication) UMK 33-REL NI/4X21-ST 55 21 83 0 Base with coil status indication UMK 33-REL 24/4X21-ST UMK 33-REL 120/4X21-ST 55 21 81 4 55 21 82 7 Figure 3. UMK 33 Relay Base Block Diagram Headquarters, U.S. Phoenix Contact Inc. P.O. Box 4100 Harrisburg, PA 17111-0100 Technical Support and Information: (800) 322-3225 Fax: (717) 948-3475 Fax-On-Demand: (800) 944-9901 Email: info@phoenixcon.com Web Site: http://www.phoenixcontact.com The following are suggested relays for use in the UMK 33 base: Potter & Brumfield KHS-17D12-24* KHS-17A12-120* KHAU-17D12-24 KHAU-17A12-120 20C217 (mounting clip) Headquarters, Canada Phoenix Contact Ltd. 235 Watline Avenue Mississauga, Ontario L4Z 1P3 Phone: (905) 890-2820 Fax: (905) 890-0180 Omron MY4-DC24 MY4-AC120 Aromat The information given herein is based on data believed to be reliable, but HC4HDC24 HC4HAC120 Phoenix Contact Inc. makes no warranties expressed or implied as to the accuracy and assumes no liability arising out of its use by others. * Hermetically sealed relays Data Sheet 1092A This publication is not to be taken as license to operate under, or recommendation to infringe, any patent. 2