Business > Industrial Devices > Automation Controls Top > Components & Devices > Relays / Couplers > Safety Relays > SF Relay Double Contact type > Rating/Performance
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Contact arrangement |
Rated coil voltage |
Operate voltage * (at 20°C) |
Release voltage * (at 20°C) |
Rated operating current (±10%, at 20°C) |
Coil resistance (±10%, at 20°C) |
Rated operating power |
Max. allowable voltage (at 60°C) |
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4 poles | 2 Form A 2 Form B |
5 V DC | Max. 75% V of rated coil voltage (Initial) |
Min. 10% V of rated coil voltage (Initial) |
100 mA | 50 Ω | 500 mW | 120% V of rated coil voltage |
12 V DC | 41.7 mA | 288 Ω | ||||||
24 V DC | 20.8 mA | 1,152 Ω | ||||||
48 V DC | 10.4 mA | 4,608 Ω | ||||||
60 V DC | 8.3 mA | 7,200 Ω | ||||||
8 poles | 4 Form A 4 Form B |
5 V DC | Max. 75% V of rated coil voltage (Initial) |
Min. 15% V of rated coil voltage (Initial) |
100 mA | 50 Ω | 500 mW | 120% V of rated coil voltage |
12 V DC | 41.7 mA | 288 Ω | ||||||
24 V DC | 20.8 mA | 1,152 Ω | ||||||
48 V DC | 10.4 mA | 4,608 Ω | ||||||
60 V DC | 8.3 mA | 7,200 Ω |
* | square, pulse drive (JIS C 5442) |
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Item | Specifications | ||
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Contact data | Contact arrangement | 2 Form A 2 Form B | 4 Form A 4 Form B |
Contact resistance (initial) |
Max. 30 mΩ (by voltage drop 6 V DC 1 A) | ||
Contact material | Au-flashed AgSnO2 type | ||
Contact rating (resistive) |
6 A 250 V AC, 6 A 30 V DC | ||
Max. switching power (resistive) |
1,500 VA, 180 W | ||
Max. switching voltage |
440 V AC, 30 V DC | ||
Max. switching current |
6 A | ||
Min. switching load (reference value) *1 |
100 mA 5 V DC | ||
Insulation resistance (initial) | Min. 1,000 MΩ (at 500 V DC, Measured portion is the same as the case of dielectric strength.) |
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Dielectric strength (initial) |
Between open contacts |
1,300 Vrms for 1 min (detection current: 10 mA) | |
Between contact sets |
2,500 Vrms for 1 min (detection current: 10 mA) | ||
Between contact and coil |
2,500 Vrms for 1 min (detection current: 10 mA) | ||
Time characteristics (initial) |
Operate time | Max. 30 ms at rated coil voltage (at 20°C, without bounce) | |
Release time | Max. 15 ms at rated coil voltage (at 20°C, without bounce, without diode) | ||
Shock resistance |
Functional | 294m/s2 (half-sine shock pulse: 11 ms, detection time: 10 µs) | |
Destructive | 980m/s2 (half-sine shock pulse: 6 ms) | ||
Vibration resistance |
Functional | 10 to 55 Hz at double amplitude of 2 mm (detection time: 10 µs) | |
Destructive | 10 to 55 Hz at double amplitude of 2 mm | ||
Expected life | Mechanical life | Min. 10 x 106 (switching frequency 180 times/min) | |
Conditions | Conditions for usage, transport and storage *2 |
Ambient temperature: -40 to +70°C, Humidity: 5 to 85% RH (Avoid icing and condensation) |
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Unit weight | Approx. 38 g | Approx. 47 g |
*1 | This value is a rough indication of the lower limit at which switching is possible at micro load level. 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. |
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*2 | For ambient temperature, please refer to the "GUIDELINES FOR RELAY USAGE". |
Conditions: Resistive load, switching frequency 20 times/min
Type | Switching capacity | Number of operations |
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2 Form A 2 Form B, 4 Form A 4 Form B | 6 A 250 V AC | Min. 100 x 103 |
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