Gas Discharge Tubes Heavy Duty Delta Range RoHS Greentube™ SL1026 Series Gas Plasma Arresters Pb ® The SL1026 series is a heavy-duty transient suppresser using Gas Plasma technology. In response to a transient voltage which exceeds the fixed breakover voltage (selected according to part number) the device changes from a very high impedance state to a low impedance state, there by conducting harmful current away from the protected system. The design is optimized for the protection of electrical and electronic equipment employed in Railway systems: carefully designed geometry ensures the device does not become a short circuit in the event of a failure due to conditions and events beyond the design criteria. An electrical mounting clip (PN SL1053 ) is available to aid mounting and connection. A mounting plate (PN SL 1056) is also available which accepts 10 SL1053’s. Mounting of the clips to the plate provides a common ground connection; the plate can then be connected to a suitable ground via the screw terminal. FEATURES • RoHS compliant • 55 kA surge capability (single shot) tested with 8/20µS pulse 8 GAS DISCHARGE TUBES as defined by IEC 61000-4-5 • 40 kA surge capability (repetitive) • Will protect against Trapezoidal waveforms as specified in RIA 12. • Will protect against capacitor discharge voltage transient waveforms as specified in RIA 12. • Will protect against double exponential voltage transient waveforms as specified in IEC 571. TYPE 1053 Holder Applications: • Signaling equipment. • Communication equipment • Control gear. • Trackside cabinets. • Cell phone base stations a b e All dimensions in mm 3 ELECTRODE GDT a=TIP b=RING e=GROUND (centre electrode) GRAPHICAL SYMBOL ORDERING INFORMATION Mechanical Specifications: Weight: Materials: Device Marking: SL 1026 – Voltage w w w. l i t t e l f u s e . c o m 11g (0.388 oz.) Electrode Base: Nickel Iron Alloy Electrode Plating: Bright Sn Body: Ceramic Color coded body SL1026A275: Black/Black SL1026A400: Black/Yellow SL1026A700: Black/Red 349 Gas Discharge Tubes Heavy Duty Delta Range RoHS Pb Greentube™ SL1026 Series Gas Plasma Arresters ® LITTELFUSE MAXIMUM DUTY 3 TERMINAL ARRESTER TOTALLY NON-RADIOACTIVE, UL RECOGNIZED Max Max Max Max Single Dynamic Repetitive Single Impulse DC Breakover Impulse Impulse Breakover Voltage Discharge Discharge Discharge Max AC DC Voltage @ 1kV/us Current(4)(9) Current(4)(9) Current(1)(4) Current(4)(7) (Vbr) (A) (A) Part Number Voltage (A) (A) (Vbr) 200-350 800 40,000 55,000 400 300-500 900 40,000 55,000 SL1026-700 700 560-840 1000 40,000 55,000 SL1026-1100 1100 880-1320 1700 40,000 55,000 SL1026-275 275 SL1026-400 Max AC Current, Nominal 9 cycles Insulation Max Holdover On-State 50Hz(4) Resistance(10) Capacitance(4) Voltage(3) Voltage @ (Ohms) (A) (pF) 1A (V) (V) 40 200 1x108 2.5 130 20 10,000 40 200 1x108 2.5 130 20 10,000 40 200 1x108 2.5 130 20 40 200 1x108 2.5 130 20 10,000 10,000 (1) At delivery AQL 0.65 level II, DIN ISO 2859 (2) In ionized mode (3) Tested according to ITU-T Rec.K.12 (4) Either end electrode to center electrode (5) Total current through center electrode, both line electrodes connected together (6) 100 amps, 10/1000µS pulse, as per ITU K 12 (7) 10 shots, A.C. 50Hz, 1 sec. Duration. (9) 10 shots, 8/20µS waveform (10) measured @ 100 volts Voltage vs Time Characteristic Voltage (V) Max dynamic breakover voltage Hold-over voltage On-State voltage 0 200 400 600 800 1000 1200 Time (ns) 350 w w w. l i t t e l f u s e . c o m