General technical data Series 51 Actuator with snap-action switching element block (Keylock- and Selector switch 3 positions) Switching system Electrical characteristics Self-cleaning, double-break snap action switching system Electrostatic discharge (ESD) 1normally closed and 1 normally open contact per element. 15 KV (Keylock switch) Conventional free air thermal current Material 5 A The maximum current in continuous operation and at ambient Material of contact temperature not exceeding the quoted maximum values. Gold plated hardsilver Switch rating Switch housing 250 VAC, 5 A (cos 0.75) Diallylphthalate (DAP), heat-resistant and self-extinguishing Electric strength Actuator housing 2500 VAC, 50 Hz, 1 min. between all terminals and earth, Polyetherimide, self-extinguishing as per IEC 60512-2-11 Protection class Mechanical characteristics II Terminals Soldering terminal which can also be used as plug-in terminal Environmental conditions 2.8 x 0.5 mm: Max. wire diameter 2 wires of 1 mm Storage temperature Max. wire cross-section of stranded cable 2 x 0.75 mm -40 C +85 C Tightening torque Service temperature for fixing nut max. 50 Ncm -25 C +55 C for selector switches mounted as a block, make sure the heat can Actuating torque escape freely 2.5 Ncm 5.5 Ncm, depending on the number of switching elements. Measured at the key or lever of the keylock- or selector Protection degree switch. Front side, as per IEC 60529 IP 65 keylock switch Actuating travel IP 40 selector switch Keylock-/selector switch actuator with 3 positions 2 x ca. 42 deflection momentary action 2 x ca. 90 deflection maintained action Approvals Rebound time Approbations 5 ms CB (IEC 61058) CSA Mechanical lifetime CQC Keylock switch 50 000 cycles of operation ENEC (EN 61058) Selector switch 100 000 cycles of operation Germanischer Lloyd UL Declaration of conformity CE EAO reserves the right to alter specifications without further notice.General technical data Series 51 Actuator with low level switching element Switching system Actuating travel Illuminated pushbutton 3 mm This low level switching element was designed for switching low Keylock-/selector switch actuator 2 positions: powers in electronic circuits. The mechanism assures reliable 1 x ca. 42 deflection momentary action switching of loads ranging from a few A/V up to 100 mA/ 1 x ca. 90 deflection maintained action 42 VAC/DC. Single-break momentary contact, as normally open or normally Rebound time closed with 4 independent points of contact. 2 momentary Typ. < 100 s contacts per switching element combination of normally open and normally closed is possible. Mechanical lifetime Special features are the long life, extremely short rebound time Momentary action 5 million cycles of operation and stable contact resistance. Maintained action 1 million cycles of operation Keylock switch 50 000 cycles of operation Material Electrical characteristics Material of contact Gold plated Contact resistance Starting value (initial) 50 m Switch housing Polysulfone, heat-resistant and self-extinguishing Electrostatic breakdown value 15 KV (Keylock switch) Actuator housing Polyetherimide, self-extinguishing Switch rating 10 A, 100 V to 100 mA at 42 VAC/VDC Mechanical characteristics Electric strength 2500 VAC, 50 Hz, 1 min. between all terminals and earth, Terminals as per IEC 60512-2-11 The universal terminals permit these units to be mounted on printed circuit boards (PCB). These terminals can also be used as soldering or plug-in terminals. Environmental conditions For these terminals we can also supply a plug-in base which, when soldered on to the board, enables the switch to be plugged in. Storage temperature -40 C +85 C Soldering terminal: Max. wire diameter 2 wires 0.8 mm Service temperature Max. wire cross-section of stranded cable 1x 0.75 mm -25 C +55 C For indicators and illuminated pushbuttons mounted as a block, Plug-in terminal 2.0 x 0.5 mm make sure the heat can escape freely. Tightening torque Protection degree for fixing nut max. 50 Ncm IP 65 front side, as per IEC 60529 Actuating torque Shock resistance 2.5 Ncm 5.5 Ncm, measured at the key or lever of the keylock- (Single impacts, semi-sinusoidal) or selector switch 15 g for 11 ms, as per IEC 60512-4-3, IEC 60068-2-27 Actuating force 3 N 3.5 N EAO reserves the right to alter specifications without further notice.