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Return PC16ECO/B4OW2S POTENTIOMETER 4 Amp. SPST switch mounted on an ECO potentiometer with XA terminals. (Approved to EN 61058-1) Operating Torque: 0.4 - 1.5 Ncm Permissable Axial Spindle Load: 50 N (5 Sec. maximum) Permissable Torque at End Stop: 35 Ncm Rotation angle: 300° ±5° Click Stop facility available on certain models Effective rotation: Without a switch: 267° nominal With push push switch (/10APP, /MS): 267° nominal With rotary switch: 232° nominal Rated Power Dissipation @40°C for ECO potentiometers: 0.25W linear law 0.12W non linear law Rated Resistance: E3 Series, Optional: E6 Series Linear Law: 1K - 1M Non linear Law: 4K7 - 470K Law; Lin (a) Log (B) Antilog (C) Temperature Coefficient of Resistance: +300 -500 ppm Life: >= 20,000 cycles ROTARY SWITCH SPECIFICATION The rotary switch module is certified by UL Demko to EN61058-1 with Cenelec Certification Agreement (CCA) and the 1A contact rating is only available when mounted on the ECO potentiometer. Our Rotary Switch Certificate is here. 1A Contact Rating: Note: The 1A contact rating is NOT available for mounting on the P16 or P20 potentiometer. 1A/250Vac 2.5A/12Vdc Surge rating (0.01 seconds): 20A Contact gap: 3mm (Full mains separation of contacts) 4A Contact Rating: 4A/250Vac 10A/12Vdc Surge rating (0.01 seconds): 80A Switch contacts: Silver tin oxide Contact gap: 2mm (Micro disconnection of switch - micro separation of contacts) COMMON features: Housing material: Glass filled polyester (UL 94 VO) Initial contact resistance: 20 milliohms Insulation resistance: 50,000 Megohms Life (operations at full load): 10,000 minimum Operating temperature: -25ºC to +70ºC Operating torque: 4.0 cNm maximum Mechanical rotation: 300º Proof voltage: 3kV minimum ROTARY SWITCH TERMINALS Layout Diagram as viewed on the rear of the switch module: (Potentiometer terminals at the bottom) Configuration SPST (1S) - Single pole, Single throw: DPST (1S) - Double pole, Single throw: SPDT (2S) - Single pole, Double throw: (NOT certified) DPDT (2S) - Double pole, Double throw: (NOT certified) Notes 1. Moving contact(s) shown when the potentiometer shaft is in a counterclockwise (CCW) position. 2. 'Ordinary Wiring'(OW) or 'Printed Circuit'(PC) terminals can be requested on the switch. 3. Terminals 1 and 3 are only fitted for the DT ('2S' or 'CH') versions which are NOT UL Demko certified. ECO BUSH HOUSING The ECO bush housing is made of glass filled nylon, the thread is M10 x0.75mm pitch and 8mm long, alternatively a 12mm long thread is also available from October 2008. Do not attempt to prevent any unwanted body rotation by overtightening the retaining nut, since this can cause thread damage, distortion, change of electrical resistance and restrict shaft rotation. BS9130:1972 provides further details on this topic. The recommended torque for tightening the retaining nut is 45cNm and this can be achieved cost effectively by using a Torque Limiting device as shown on our Accessories page. ECO SPINDLES The ECO plastic spindles are fixed and not removable. They are available in the following three diameters: 6.0mm Diameter - Length (L) available from 14mm to 65mm Cylindrical (Type F1) 4.0 x 12mm Flat (Type F2) 5.0 x 15mm Flat (Type F3) 5.0 x 10mm Flat (Type F4) 4.6mm x 15mm Flat (Type F11) 4.0 x 8mm Flat (Type F13) 5.0 x 8mm Flat (Type F14) 4.0mm Diameter - Length (L) available from 14mm to 35mm Cylindrical (Type F21) 3.0 x 8.5mm Flat (Type F22) 6.35mm Diameter - Length (L) available from 14mm to 65mm Cylindrical (Type F41) 5.5 x10mm Flat (Type F42) Cylindrical and Flatted Spindles Splined Spindle (6.0mm diameter) A splined form is also available on the 6.0mm diameter ECO plastic spindle. Please note that this splined form is only available in a length (L) of 19mm.