TeSys™ Deca Contactors

Refer to Catalog MKTED210011EN

RC and Varistor Coil Suppressors

LA4DA1U

RC Coil Suppressor

  • Limitation of transient voltage to 300% of nominal voltage maximum.

  • Oscillating frequency limited to 400 Hz maximum. Slight increase in drop-out time (1.2–2 times normal).

Resistor/Capacitor Circuit (RC) for Reduction of Electrical Noise in AC Contactor Coils

Installed by

Mounting on

Operating Voltage 50/60 Hz

Catalog Number

Snapping into the cavity on the right side without tools [1]

LC●D09–D38 (3P),
LC1DT20–DT40 (4P)

24–28 Vac

LAD4RCE

50–127 Vac

LAD4RCG

110–240 Vac

LAD4RCU

Snap-on mounting, and connection without tools to the contactor coil terminals

LC1D40A–65A (3P), LC1DT60A–DT80A (4P)

24-48 Vac

LAD4RC3E

50–127 Vac

LAD4RC3G

110–240 Vac

LAD4RC3U

380–415 Vac

LAD4RC3N

Screw connection to the contactor coil terminals

LC●D80–D150 (3P),
LC1D80–D115 (4P)

24–48 Vac

LA4DA2E

50–127 Vac

LA4DA2G

110–240 Vac

LA4DA2U

380–415 Vac

LA4DA2N


Varistor Coil Suppressor [2]

  • Limitation of transient voltage value to 200% of nominal voltage maximum.

  • Maximum reduction of transient voltage peaks. Slight increase in drop-out time (1.1–1.5 times normal).

Varistor (Peak Limiting) for Reduction of Electrical Noise in AC Contactor Coils

Installed by

Mounting on

Operating Voltage

Catalog Number

Snapping into the cavity on the right side without tools [1]

LC●D09–D38 (3P),
LC1DT20–DT40 (4P)

24–48 Vac

LAD4VE

110–250 Vac

LAD4VU

Snap-on mounting, and connection without tools to the contactor coil terminals

LC1D40A–D65A (3P), LC1DT60A–DT80A (4P)

24–48 Vac/Vdc

LAD4V3E

110–250 Vac/Vdc

LAD4V3U

Screw connection to the contactor coil terminals

LC●D80–D115 (3P)

LC1D80–D115 (4P)

24–48 Vac

LA4DE2E

110–250 Vac

LA4DE2U

Screw connection to the contactor coil terminals

LC●D80–D95 (3P)

LC1D80 (4P)

24–48 Vdc

LA4DE3E

110–250 Vdc

LA4DE3U

Diode Coil Suppressor

LA4DC3U

  • No overvoltage or oscillating frequency.

  • Polarized component. Increased drop-out time (6–10 times normal).

Diode for Reduction of Electrical Noise in DC Contactor Coils

Installed on the upper part by

Mounting on

Operating Voltage, DC

Catalog Number

Snap-on mounting and connection w/o tools to the contactor coil terminals

LC●D09 to D38 (3P),

LC1DT20 to DT40 (4P)

24–250 Vdc

LAD4DDL

Clip-on front mounting

LC●D40A to D65A (3P),

LC1DT60A to DT80A (4P)

24–250 Vdc

LAD4D3U

Screw connection of wire to the contactor coil terminals

LC●D80 to D95 (3P),
LC1D80 (4P)

24–250 Vdc

LA4DC3U

Bidirectional Diode Coil Suppressor

  • Protection provided by limiting the transient voltage to 2 Uc max.

  • Maximum reduction of transient voltage peaks

LAD4T3B

Bidirectional Peak Limiting Diode [3]

Installed by

Mounting on

Operating Voltage

Catalog Number

Vac (50/60 Hz)

Vdc

Snapping into the cavity on the right side of the contactor [1]

LC●D09–D38 (3P)[4]

LC1DT20–DT40 (4P)

24

LAD4TB

24

LAD4TBDL

Clip-on front mounting and connection without tools
to the contactor coil terminals [4]

LC●D40A–D65A (3P), LC1DT60A–DT80A (4P)

12–24

12–24

LAD4T3B

Screw mounting [5]

LC●D80–D95 (3P),
LC1D80 (4P)

24

LA4DB3B


LAD4BB●●

Cabling Accessories [3]

Usage

Mounting on

Operating Voltage 50/60 Hz

Catalog Number

For adapting existing wiring to a new product or for use with top-mounting accessory.

LC1D09–D38

Without coil suppression

LAD4BB

With coil
suppression (varistor)

24–48 Vac

LAD4BBVE

50–127 Vac

LAD4BBVG

For adapting existing wiring to a new product or for use with top-mounting accessory

LC1D40A–D65A

Without coil suppression

LAD4BB3


Footnotes

  1. Installing the suppressor into the cavity makes the electrical connection. Overall width of the contactor remains the same.
  2. For additional accessory and replacement part options, see Catalog MKTED210011EN. Check with local sales office for availability.
  3. For additional voltage and accessory options, see Catalog MKTED210011EN. Check with local sales office for availability.
  4. For LC•D09–LC•D65A with DC or low consumption DC coils, 3–pole contactors are fitted wit built-in bidirectional diode suppression as standard.
  5. Mounting at the top of the contactor on coil terminals A1 and A2.

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