Chapter N

Characteristics of particular sources and loads


LED lamps - choice of contactors

From Electrical Installation Guide

Figure N49 and Figure N50 show the maximum number of LED lamps for each contactor / relay.

  • These values are given for a 230 V circuit with 2 active conductors (single-phase phase/neutral or two-phase phase/phase). For 110 V circuits, divide the values in the table by 2.
  • To obtain the equivalent values for the whole of a 230 V three-phase circuit, multiply the number of lamps and the total acceptable power:
    • by √3 (1.73) for circuits with 230 V between phases without neutral,
    • by 3 for circuits with 230 V between phase and neutral or 400 V between phases.
  • for Reflex iC60:
    • B-curve ratings, the number of lamps should be reduced by 50 %.
    • D-curve ratings, the number of lamps should be increased by 50 %.
Fig. N49 – Maximum number of LED lamps for iCT and iCT+ contactors
Products iCT contactors iCT+ contactors
Type of lamp Maximum number of light fittings for a single-phase circuit and maximum power output per circuit
16 A 25 A 40 A 63 A 20 A
LED lamps
With driver

DB431033.png

10 W 48 500 W
to
1400 W
69 700 W
to
1950 W
98 1000 W
to
3000 W
200 2000 W
to
6200 W
4660 W x cos φ
30 W 38 54 77 157
50 W 27 39 56 114
75 W 17 25 36 73
150 W 9 12 18 37
200 W 7 9 15 31
Fig. N50 – Maximum number of LED lamps for iTL and iTL+ impulse relays, and for Reflex iC60 (C-Curve)
Products iTL impulse relays iTL+ impulse relays Reflex iC60 (C curve)
Type of lamp Maximum number of light fittings for a single-phase circuit and maximum power output per circuit
16 A 32 A 16 A 10 A 16 A 25 A 40 A 63 A
LED lamps
With driver

DB431033.png

10W 69 700W
to
1950W
98 1000W
to
3000W
3680W x

cosφ

30 300W
to
850W
44 450W
to
1250W
71 700W
to
2000W
108 1050W
to
3050W
146 1450W
to
4150W
30W 54 77 24 34 55 83 113
50W 39 56 17 25 40 61 83
75W 25 36 11 15 24 37 50
150W 12 18 5 7 11 17 23
200W 9 15 - 6 10 15 20
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