Issued to: SIEMENS AG I IA CE CP R&D-VI 4 WERNER-VON-SIEMENS-STRASSE 48 92220 AMBERG GERMANY This is to certify that Auxiliary Devices representative samples of Auxiliary Devices, Pushbutton and Pilot Light Units Types 3SB2 followed by 0, 2, 3, 4 or 9 followed by 0, 1, 2, or 5 followed by a number 0 through 8, may be followed by additional numbers and letters. Have been investigated by Underwriters Laboratories in accordance with the Standard(s) indicated on this Certificate. Standard(s) for Safety: Industrial Control Equipment: UL 508 and CSA-C22.2 No. 14 Additional Information: See UL On-line Certification Directory at WWW.UL.COM for additional information. Certificate Number Report Reference Issue Date 20111219-E44653 E44653-19910425 2011-DECEMBER-19 Page 2 of 2 This is to certify that representative samples of the product as specified on this certificate were tested according to the current UL requirements. GENERAL: These devices are pilot light units or pushbutton units provided with one normally open or normally closed contact. A max of two units can be mounted to a mounting base with or without a pilot light. RATINGS: Pushbutton units 3SB2404: Pilot light units: B300 (300 V ac max standard pilot duty) R300 (300 V dc max standard pilot duty) 60 V max, 1.2 W max NOMENCLATURE BREAKDOWN: 3SB2 I 908 II OAB01 III I - Basic Type - Pushbutton and Pilot Light Units II - 404 - Contact Element 9.. - Accessories 000 - Actuator Element 001 - Indicator Element 304 - Lampsocket Element 455 - Contact Element (double version) 2..- Complete device (combination of elements) III - Combination of numbers and letters as suffix for different contact figuration, voltage rating, color of lens, or actuator type. William R. Carney Director, North American Certification Programs Underwriters Laboratories Inc. Any information and documentation involving UL Mark services are provided on behalf of Underwriters Laboratories Inc. (UL) or any authorized licensee of UL. For questions, please contact a local UL Customer Service Representative at http://www.ul.com/global/eng/pages/corporate/contactus