Flat type safety relays SF RELAYS FEATURES 1. Forced operation contacts 5. High sensitivity N.O. and N.C. side contacts are Realizes thin shape and high sensitivity connected through a card so that one (500mW nominal operating power) by interacts with the other in movement. In utilizing high-efciency polarized case of a contact welding, the other magnetic circuit with 4-gap balanced keeps a min. 0.5mm .020inch contact armature. gap. 6. Complies with safety standards 2. Separated chamber structure Standard products are UL, CSA, TV N.O. and N.C. side contacts are put in and SEV certied. Conform to European each own space surrounded with a card standards. TV certied. Complies with and a body-separater. That prevents SUVA European standard. short circuit between contacts, which is caused by their springs welding or TYPICAL APPLICATIONS damaged. 3. Contact arrangement of 3 Form A 1. Industrial equipment such as 1 Form B presses and machine tools Enables various forms of control circuit. 2. Elevators and other kinds of 4. High breakdown voltage hoisting mechanisms, conveyor High breakdown voltage 2,500 Vrms equipment. (between contact sets/ between contact RoHS compliant and coil) ORDERING INFORMATION SF 3 Contact arrangement 3: 3 Form A 1 Form B Nominal coil voltage DC 5, 12, 24, 48, 60V TYPES Contact arrangement Nominal coil voltage Part No. 5V DC SF3-DC5V 12V DC SF3-DC12V 3 Form A 1 Form B 24V DC SF3-DC24V 48V DC SF3-DC48V 60V DC SF3-DC60V Standard packing: Carton: 20 pcs. Case: 200 pcs. RATING 1. Coil data Nominal coil current Coil resistance Nominal operating Max. applied Contact Nominal coil Pick-up voltage Drop-out voltage 10% 10% power voltage arrangement voltage (at 20C 68F) (at 20C 68F) (at 20C 68F) (at 20C 68F) (at 20C 68F) (at 20C 68F) 5V DC 100mA 50 12V DC 41.7mA 288 80%V or less of 10%V or more of 120%V of 3 Form A 1 Form B 24V DC nominal voltage nominal voltage 20.8mA 1,152 500mW nominal voltage (Initial) (Initial) 48V DC 10.4mA 4,608 60V DC 8.3mA 7,200 ASCTB118E 201408-T 1SF 2. Specications Characteristics Item Specications Arrangement 3 Form A 1 Form B Contact Contact resistance (Initial) Max. 30 m (By voltage drop 6 V DC 1A) Contact material Au-ashed AgSnO2 type Nominal switching capacity (resistive load) 6A 250V AC, 6A 30V DC Max. switching power (resistive load) 1,500VA 180W Max. switching voltage 250V AC, 30V DC Rating Max. switching current 6A Nominal operating power 500mW 1 Min. switching capacity (Reference value)* 100mA 5V DC Insulation resistance (Initial) Min. 1,000M (at 500V DC) Measurement at same location as Breakdown voltage section. Between open contacts 2,500 Vrms for 1min. (Detection current: 10mA) Breakdown voltage Between contact sets 2,500 Vrms for 1min. (Detection current: 10mA) (Initial) Between contact and coil 2,500 Vrms for 1min. (Detection current: 10mA) Electrical Max. 45C 113F characteristics Temperature rise (coil) (By resistive method, nominal voltage applied to the coil contact carrying current: 6A) Surge breakdown voltage (between contact and coil) Operate time Max. 30ms (Nominal voltage applied to the coil, excluding contact bounce time.) Max. 15ms (Nominal voltage applied to the coil, excluding contact bounce time.) Release time (without diode) 2 Functional Min. 294 m/s (Half-wave pulse of sine wave: 11 ms detection time: 10s) Shock resistance 2 Destructive Min. 980 m/s (Half-wave pulse of sine wave: 6 ms) Mechanical characteristics Functional 10 to 55 Hz at double amplitude of 2 mm (Detection time: 10s) Vibration resistance Destructive 10 to 55 Hz at double amplitude of 2 mm 7 Mechanical Min. 10 : (at 180 times/min.) Expected life 4 2 Electrical Min. 310 (at 20 times/min.)* Ambient temperature: 40C to +70C 40F to +158F 3 Conditions for operation, transport and storage* Humidity: 5 to 85% R.H. (Not freezing and condensing at low temperature) Conditions Max. Operating speed 180 times/min. Unit weight 38g 1.34oz Notes: *1. This value can change due to the switching frequency, environmental conditions and desired reliability level, therefore it is recommended to check this with the actual load. 5 *2. More than 10 operations when applying the nominal switching capacity to one side of contact pairs of each Form A contact and Form B contact *3. The upper limit of the ambient temperature is the maximum temperature that can satisfy the coil temperature rise value. Refer to Usage, transport and storage conditions in NOTES. DIMENSIONS (mm inch) The CAD data of the products with a CAD Data mark can be downloaded from: