Plug-In Relays

Mini 280 Relays

VF28

Please observe the disclaimer.

59

Catalog 1308028

Revision 03-06

Revision 03-05

Coil data

Available for nominal voltages

12, 24 V

Nominal power consumption of the unsuppressed coil at nominal voltage

1.6 W

Nominal power consumption at nominal voltage with suppression resistor

1.8 W

Test voltage winding/contact

Ambient temperature range

– 40 to + 125 °C

Operate time at nominal voltage

Typ. 7 ms

Typ. 4 ms

1)

For unsuppressed relay coil

N.B.

A low resistive suppression device in parallel to the relay coil increases the release time and reduces

the lifetime caused by increased erosion and/or higher risk of contact tack welding.

Ambient temperature vs. coil voltage for continuous duty

110

100

90

80

70

60

50

90

95

100

105

110

115

120

125

130

135

140

145

150

Applied Coil Voltage (% of Nominal Voltage)

40

120

130

140

ECR2116-6

0 A Contact Load

7 A Contact Load

14 A Contact Load

21 A Contact Load

28 A Contact Load

35 A Contact Load

110

100

90

80

70

60

50

90

95

100

105

110

115

120

125

130

135

140

145

150

Applied Coil Voltage (% of Rated Nominal)

40

120

130

140

0 A Contact Load

6 A Contact Load

12 A Contact Load

18 A Contact Load

24 A Contact Load

30 A Contact Load

ECR2117-E

Assumptions:

1. Still air

2. Nominal coil resistance

3. Maximum mean coil temperature = 180 °C

4. Coil temperature rise due to load

= 1.3 °C at 7 A

= 3.1 °C at 14 A

= 7.2 °C at 21 A

= 12.1 °C at 28 A

= 19 °C at 35 A

5. Thermal resistance and power dissipation based on coil

resistance at 180 °C

6. Curves are based on 1.6 W at 23 °C

Assumptions:

1. Still air

2. Nominal coil resistance

3. Maximum mean coil temperature = 180 °C

4. Coil temperature rise due to load

= 0.8 °C at 6 A

= 3.6 °C at 12 A

= 6.3 °C at 18 A

= 11 °C at 24 A

= 16.8 °C at 30 A

5. Thermal resistance and power dissipation based on coil

resistance at 180 °C

6. Curves are based on 1.6 W at 23 °C