Varistors (ZNR Surge Absorber) Type CK UL and CSA Recognized Varistors (ZNR Surge Absorber) with Tabs Type: CK Varistors (ZNR Surge Absorber) with Tabs is a heavy duty type ZNR with very unique tab terminals which bring forth a higher reliability. These tabs are used as electrical connecting terminals and also its mounting legs. This type of ZNR is meant for applications in power supplies or ransient voltage surge suppressor units where large surge current or high surge energy absorption is required. Features UL and CSA recognized components High energy handling capability (210 to 750 joules) Large withstanding peak current (20 to 25 kA, 8/20 s, 2 times) Common terminals for electrical connection and mounting RoHS compliant Recommended Applications Power suppliers for OA, FA, telecommunication or industrial equipment Power strips Transient voltage surge suppressor units Related Standards CSA C22.2 No.269.5 Standard No. UL1449 Accessories and Parts for Electronic Products Title Surge Protective Devices (Varistor for Across-The-Line use as transient protection on 120 V ac nominal system) Each type designation is not registered by Part Number. Please contact us for further questions regarding type designation. Note : Ask our factory for Product Specification before use. As for Handling Precautions and Minimum Quantity / Packing Unit Please see Related Information Explanation of Part Numbers 1 2 3 4 5 6 7 8 9 10 11 12 Product Code Series Element Size Type Tolerance Nominal Design No. Varistor Voltage Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use. Should a safety concern arise regarding this product, please be sure to contact us immediately. 14-Dec-20Varistors (ZNR Surge Absorber) Type CK Ratings and Characteristics Operating Temperature Range : -40 to 85 Storage Temperature Range : -40 to 125 Maximum Maximum Maximum Maximum Part No. Varistor Energy Peak Current Type Allowable Clamping UL/CSA Voltage (2ms) (8/20 s) Designation Voltage Voltage Recognized 1 time 1 time 2 times () Arms() DC() V (V) Ip (A) (J) (kA) (kA) 1 XA ERZC32CK201W 32K201U 200 (185 to 225) 130 170 *340 200 210 25 20 ERZC32CK241W 32K241U 240 (216 to 264) 150 200 *395 200 240 25 20 ERZC32CK271W 32K271U 270 (247 to 303) 175 225 *455 200 255 25 20 ERZC32CK361W 32K361U 360 (324 to 396) 230 300 *595 200 325 25 20 ERZC32CK391W 32K391U 390 (351 to 429) 250 320 *650 200 350 25 20 ERZC32CK431W 32K431U 430 (387 to 473) 275 350 *710 200 400 25 20 ERZC32CK471W 32K471U 470 (423 to 517) 300 385 *775 200 405 25 20 ERZC32CK511W 32K511U 510 (459 to 561) 320 415 *845 200 405 25 20 ERZC32CK621W 32K621U 620 (558 to 682) 385 505 1025 200 415 25 20 ERZC32CK681W 32K681U 680 (612 to 748) 420 560 1120 200 450 25 20 ERZC32CK751W 32K751U 750 (675 to 825) 460 615 1240 200 500 25 20 ERZC32CK781W 32K781U 780 (702 to 858) 485 640 1290 200 520 25 20 ERZC32CK821W 32K821U 820 (738 to 902) 510 670 1355 200 545 25 20 ERZC32CK911W 32K911U 910 (819 to 1001) 550 745 1500 200 600 25 20 ERZC32CK951W 32K951U 950 (855 to 1045) 575 765 1570 200 600 25 20 ERZC40CK201W 40K201U 200 (185 to 225) 130 170 *340 250 260 30 25 ERZC40CK241W 40K241U 240 (216 to 264) 150 200 *395 250 300 30 25 ERZC40CK271W 40K271U 270 (247 to 303) 175 225 *455 250 340 30 25 250 30 25 ERZC40CK361W 40K361U 360 (324 to 396) 230 300 *595 405 250 30 25 ERZC40CK391W 40K391U 390 (351 to 429) 250 320 *650 435 250 30 25 ERZC40CK431W 40K431U 430 (387 to 473) 275 350 *710 500 ERZC40CK471W 40K471U 470 (423 to 517) 300 385 *775 250 505 30 25 ERZC40CK511W 40K511U 510 (459 to 561) 320 415 *845 250 505 30 25 ERZC40CK621W 40K621U 620 (558 to 682) 385 505 1025 250 515 30 25 ERZC40CK681W 40K681U 680 (612 to 748) 420 560 1120 250 560 30 25 ERZC40CK751W 40K751U 750 (675 to 825) 460 615 1240 250 625 30 25 ERZC40CK781W 40K781U 780 (702 to 858) 485 640 1290 250 650 30 25 ERZC40CK821W 40K821U 820 (738 to 902) 510 670 1355 250 680 30 25 ERZC40CK911W 40K911U 910 (819 to 1001) 550 745 1500 250 750 30 25 ERZC40CK951W 40K951U 950 (855 to 1045) 575 765 1570 250 750 30 25 Dimensions in mm (not to scale) Part No. Type Designation D max. H max. T max. d UL/CSA Recognized ERZC32CK201W 32K201U 7.5 5.71.0 ZNR ERZC32CK241W 32K241U 7.5 5.41.0 ERZC32CK271W 32K271U 8.5 5.21.0 Abbreviation of Part No. ERZC32CK361W 32K361U 9.0 4.61.0 Date code ERZC32CK391W 32K391U 9.0 4.41.0 ERZC32CK431W 32K431U 9.0 4.11.0 ERZC32CK471W 32K471U 9.7 3.91.0 T ERZC32CK511W 32K511U 36 46 9.7 4.51.0 ERZC32CK621W 32K621U 9.7 3.91.0 ERZC32CK681W 32K681U 9.7 3.61.0 H ERZC32CK751W 32K751U 10.5 3.31.0 ERZC32CK781W 32K781U 10.5 3.11.0 ERZC32CK821W 32K821U 10.5 2.91.0 ERZC32CK911W 32K911U 11.5 2.51.0 ERZC32CK951W 32K951U 11.5 2.31.0 ERZC40CK201W 40K201U 7.5 5.71.0 18 ERZC40CK241W 40K241U 7.5 5.41.0 ERZC40CK271W 40K271U 8.5 5.21.0 25 ERZC40CK361W 40K361U 9.0 4.61.0 ERZC40CK391W 40K391U 9.0 4.41.0 7 7 ERZC40CK431W 40K431U 9.0 4.11.0 ERZC40CK471W 40K471U 9.7 3.91.0 ERZC40CK511W 40K511U 44 50 9.7 4.51.0 8 d ERZC40CK621W 40K621U 9.7 3.91.0 ERZC40CK681W 40K681U 9.7 3.61.0 2 3.4 ERZC40CK751W 40K751U 10.5 3.31.0 ERZC40CK781W 40K781U 10.5 3.11.0 ERZC40CK821W 40K821U 10.5 2.91.0 ERZC40CK911W 40K911U 11.5 2.51.0 ERZC40CK951W 40K951U 11.5 2.31.0 Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use. Should a safety concern arise regarding this product, please be sure to contact us immediately. 14-Dec-20