1250 Series General Duty AC Surge Protective Device INSTALLATION INSTRUCTIONS ATTENTION! • Installation must be performed only by a properly trained operator or an electrician. • National electrical installation rules must be followed. • The unit must be used only as a surge protector and according to the conditions described in this document. • Surge protectors must be selected in relation to a dedicated AC network (see Technical Data). • Dedicated fuses must be installed in the surge protector branch (see Standard Wiring). • In the case of a red indicator, the surge protector must be replaced. Technical Data S 1250-1 S S 1250-3 1250-2 S 1250-4 Model Specification AC Network 12502S-120 12503S-120 120 Vac 208 Vac L+N 3L IPE (1) ISCCR (1) Imax (1) Protection Level Operating Altitude Operating Temp. Indoor Use Only 12504S-120 12502S-230 12503S-230 12504S-230 120/208 Vac 3L+N 230 Vac L+N 400 Vac 230/400 3L Vac 3L+N <1 mA 25 kA 50 kA IP 20 2000 m max. (6500 ft. max.) -40 to +85 °C max. (-40 to +1 °F max.) 12502S-400 12503S-400 12504S-400 12503S-480 (2) (2) (2) (2) 230 Vac L+N 400 Vac 3L 230/400 Vac 3L+N 347/600 Vac 3L X (1) Values per pole. (2) For use with ungrounded transformer. Asia-Pacific: Tel: +886-2 2562-4117 • Fax: +886-2 2562-4116 Europe: Tel: +41-41 768 5555 • Fax: +41-41 768 5510 The Americas: Tel: +1-951 781-5500 • Fax: +1-951 781-5700 www.bourns.com Specifications are subject to change without notice. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their specific applications. 1250 Series General Duty AC Surge Protective Device INSTALLATION INSTRUCTIONS Installation DIMENSIONS MIN. 2.5 mm2 MAX. 35 mm2 DIA. 13 mm - 2 AWG 2.5 mm2 25 mm2 13 mm - 4 AWG 13 mm (0.5 in.) 5 Main Switchboard or Sub-panel 2.0 - 2.5 Nm (17.8 - 22.1 Lb-In.) F1 N L1 L2 L3 4 1 F2 CLIP-ON SYMMETRICAL DIN RAIL 1250-4S 3 2.0 - 2.5 Nm (17.8 - 22.1 Lb-In.) PE 2 Wiring Standard Wiring F1 L/N F2 N L a L1 L2 L3 F1 F2 Remote Contact Wiring N L1 L2 L3 F1 F2 F1 F2 <50 cm a+b= (<20 in.) 1.5 mm² # 16 AWG max. b PE PE F1 PE PE 1*max. 2*recommended F1 > 160 A F1 > 100 A F2 ≤ 160 A F2 = 100 A F1 ≤ 160 A F1 ≤ 100 A No F2 F2 < F1 2.1 Lb-In 0.5 Nm max. 250 Vac / 0.5 A max. 30 Vdc / 3 A max. F2 SPD * depending on national rules Remote signal for disconnection information 11-12 Closed = SPD OK 11-14 Open = SPD OK 11-12 Open = SPD disconnect 11-14 Closed = SPD disconnect Specifications are subject to change without notice. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their specific applications. 1250 Series General Duty AC Surge Protective Device INSTALLATION INSTRUCTIONS Maintenance 12 11 14 12 11 14 X and replace with 1250-xxx 10/13 Specifications are subject to change without notice. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their specific applications.