Page 37 - IDEC relay catalogue

Relays & Sockets RU Series

Ambient Temperature vs. Temperature Rise Curves
RU2 (AC Coil, 50 Hz) RU2 (AC Coil, 60 Hz) RU2 (DC Coil)

120 120 120
110 110 110
100 Load current 100 100 Switches & Pilot Lights
Temperature Rise (°C) 80 10A × 2 poles Temperature Rise (°C) 80 Load current Temperature Rise (°C) 80 Load current
90
90
90
70
70
70
10A × 2 poles
10A × 2 poles
60
60
60
50
50
50
40
5A × 2 poles
30
30
30 Load current 40 Load current 40 Load current
No load current 5A × 2 poles 5A × 2 poles
20 20 20 No load current
No load current
10 10 10
0 10 20 30 40 50 60 70 0 10 20 30 40 50 60 70 0 10 20 30 40 50 60 70
Ambient Temperature (°C) Ambient Temperature (°C) Ambient Temperature (°C) Display Lights
RU4/RU42 (AC Coil, 50 Hz) RU4/RU42 (AC Coil, 60 Hz) RU4/RU42 (DC Coil)
120 120 120
110 110 110
100 100 100
Temperature Rise (°C) 80 Load current Temperature Rise (°C) 80 Load current Temperature Rise (°C) 80 Load current
90
90
90
70
70
70
6A × 2 poles
6A × 2 poles
60
60
60
6A × 2 poles
50
50
50
40
3A × 4 poles
30
30 Load current 40 Load current 40 Load current Relays & Sockets
30
No load current 3A × 4 poles 3A × 4 poles
20 20 20 No load current
No load current
10 10 10
0 10 20 30 40 50 60 70 0 10 20 30 40 50 60 70 0 10 20 30 40 50 60 70
Ambient Temperature (°C) Ambient Temperature (°C) Ambient Temperature (°C)
The above temperature rise curves show the characteristics when 100% the rated coil voltage is applied.
The heat resistance of the coil is 120°C. The slant dashed line indicates the allowable temperature rise for the coil at different ambient temperatures.
Load current 6A x 2 poles is for the RU4 models only. Timers
Terminal Blocks

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