References TeSys contactors
TeSys D contactors and reversing contactors
Suppressor modules
RC circuits (Resistor-Capacitor)
Effective protection for circuits highly sensitive to "high frequency" interference. For use only in cases where the
voltage is virtually sinusoidal. i.e. less than 5% total harmonic distortion. Voltage limited to 3 Uc max. and
oscillating frequency limited to 400 Hz max. Slight increase in drop-out time (1.2 to 2 times the normal time).
1
Mounting For use with contactor (1) Reference Weight
Rating Type
Va Vc kg
LAD 4pp Clip-on side mounting (3) D09…D38 (3P) 24…48 – LAD 4RCE 0.012
DT20…DT40 50…127 – LAD 4RCG 0.012
110…250 – LAD 4RCU 0.012 2
Clip-on front mounting (3) D40A…D65A (3P) 24…48 – LAD 4RC3E 0.020
DT60A…DT80A (4P) 50…127 – LAD 4RC3G 0.020
110…240 – LAD 4RC3U 0.020
380…415 – LAD 4RC3N 0.040
Screw fixing (4) D80…D150 (3P) 24…48 – LA4 DA2E 0.018
D40…D115 (4P) 50…127
110…240
–
–
LA4 DA2G
LA4 DA2U
0.018
0.018 3
380…415 – LA4 DA2N 0.018
Varistors (peak limiting)
Protection provided by limiting the transient voltage to 2 Uc max. Maximum reduction of transient voltage peaks.
Slight increase in drop-out time (1.1 to 1.5 times the normal time).
Clip-on side mounting (3) D09…D38 (3P) 24…48 – LAD 4VE 0.012
DT20…DT40 50…127
110…250
–
–
LAD 4VG
LAD 4VU
0.012
0.012
4
Clip-on front mounting (3) D40A…D65A (3P) 24…48 24…48 LAD 4V3E 0.020
DT60A…DT80A (4P) 50…127 50…127 LAD 4V3G 0.020
LAD 4RC3p, LAD 4V3p,
LAD 4D3U, LAD 4T3p 110…250 110…250 LAD 4V3U 0.020
Screw fixing (4) D80…D115 (3P) 24…48 – LA4 DE2E 0.018
D80…D115 (4P) 50…127 – LA4 DE2G 0.018
110…250 – LA4 DE2U 0.018 5
D80…D95 (3P) – 24…48 LA4 DE3E 0.018
D80 (4P) – 50…127 LA4 DE3G 0.018
– 110…250 LA4 DE3U 0.018
Flywheel diodes
No overvoltage or oscillating frequency. Increase in drop-out time (6 to 10 times the normal time).
Polarised component.
Clip-on side mounting (5) D09…D38 (3P), DT20…DT40 – 24…250 LAD 4DDL 0.012
6
Clip-on front mounting (5) D40A…D65A (3P), DT60A…DT80A (4P) – 24…250 LAD 4D3U 0.020
Screw fixing (4) D80 and D95 (3P), D40…D80 (4P) – 24…250 LA4 DC3U 0.018
Bidirectional peak limiting diodes
Protection provided by limiting the transient voltage to 2 Uc max.
Maximum reduction of transient voltage peaks.
Clip-on side mounting D09…D38 (3P) 24 – LAD 4TB 0.012 7
LA4 Dpp (3) (5) DT20…DT40 (4P) (2) – 24 LAD 4TBDL 0.012
72 – LAD 4TS 0.012
– 72 LAD 4TSDL 0.012
– 125 LAD 4TGDL 0.012
– 250 LAD 4TUDL 0.012
Clip-on front mounting D40A…D65A (3P)
–
12…24
600
12…24
LAD 4TXDL
LAD 4T3B
0.012
0.020
8
(3) DT60A…DT80A (4P) (2) 25…72 25…72 LAD 4T3S 0.020
73…125 73…125 LAD 4T3G 0.020
126…250 126…250 LAD 4T3U 0.020
251…440 251…440 LAD 4T3R 0.020
Screw fixing (4) D80…D95 (3P) 12…24 12…24 LA4 DB2B 0.018
D40…D80 (4P) 25…72 25…72 LA4 DB2S 0.018 9
– 24 LA4 DB3B 0.018
LAD 4DDL or LAD 4TpDL
– 72 LA4 DB3S 0.018
(1) For satisfactory protection, a suppressor module must be fitted across the coil of each contactor.
(2) From D09 to D65A and from LC1 DT20 to DT80A, d.c. and low consumption 3-pole contactors are fitted with a built-in
bidirectional peak limiting diode suppressor as standard. This bidirectional peak limiting diode is removable and can therefore
be replaced by the user. (See reference above). If a d.c. or low consumption contactor is used without suppression, the
standard suppressor should be replaced with a blanking plug (reference LAD 9DL for LC1 D09 to D38 and LC1 DT20 to DT40;
reference LAD 9DL3 for LC1 D40A to D65A and LC1 DT60A to DT80A). 10
(3) Clipping-on makes the electrical connection. The overall size of the contactor remains unchanged.
(4) Mounting at the top of the contactor on coil terminals A1 and A2.
(5) In order to install these accessories, the existing suppression device must first be removed.
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