Schneider Electric LC1D115ABNE 115 A Contactor 24-60 V AC/DC

LC1D115ABNE contactor: 115 A frame, connector terminals, 24-60 V AC/DC coil

The LC1D115ABNE is a Schneider Electric TeSys Deca contactor with connector terminals, a 24-60 V AC/DC coil and a 115 A AC-3 rating. The datasheet title reads: Contactor Deca 115A 3P 24-60V ACDC EvLk. The LC1D115 is the 115 A frame of the TeSys Deca range, a heavy contactor rated 115 A in AC-3 and AC-3e at up to 440 V and 200 A in AC-1. It is built for motors of 55 kW at 400 V and for large resistive or capacitor-free switching duties, in a body 152 mm tall, about 99 mm wide and 155 mm deep. Seven Star LLC supplies the LC1D115ABNE in Oman and the GCC as an independent supplier based in Muscat.

Reading the reference: LC1D115 is the 115 A TeSys Deca frame, the A group marks the connector terminals version, and BNE is the coil code for 24 to 60 V AC 50/60 Hz and 24 to 60 V DC. The same coil on the other terminal style is LC1D115A6BNE. The datasheet gives a body of 152 x 97 x 155 mm (H x W x D) and a net weight of 2.4 kg.

Connector terminals on the LC1D115ABNE

The LC1D115ABNE has connector-type power terminals in place of ring lugs. A bare or ferruled cable is clamped directly, so no lug crimping is needed and terminations can be redone quickly during maintenance.

In the references of this family, the part number without the 6 after the A marks the connector version. The datasheet title describes it as ‘connector’ and the sibling A6 references as ‘lugs-ring or bars’.

Technical specifications of the LC1D115ABNE

What the LC1D115ABNE switches: ratings, endurance and protection

At 115 A AC-3 the datasheet lists 30 kW at 230 V, 55 kW at 400 V, 59 kW at 415 V, 75 kW at 500 V, 80 kW at 690 V and 65 kW at 1000 V. The utilisation categories listed are AC-3, AC-3e, AC-1, AC-4, DC-1, DC-3 and DC-5.

Making capacity is 1560 A at 440 V and breaking capacity 1100 A at 440 V. Power dissipation per pole is 6 W in AC-3 and 22 W in AC-1.

Mechanical life is 8 million cycles; electrical life is 1 million cycles at 115 A AC-3 and 0.5 million at 200 A AC-1 (all at up to 440 V). The datasheet’s maximum operating rate is 2400 cycles per hour at 60 °C, and the safety data gives B10d of 684932 cycles at nominal load.

Power circuit insulation is rated 1000 V to IEC 60947-4-1 with an impulse withstand of 8 kV, overvoltage category III and pollution degree 3. Contact impedance is 0.45 mΩ at 200 A and 50 Hz.

Control voltage 24-60 V AC/DC: the coil of the LC1D115ABNE

The coil of the LC1D115ABNE is a wide-range AC/DC type: 24 to 60 V AC 50/60 Hz and 24 to 60 V DC. The datasheet states operational limits of 0.8 Uc minimum to 1.1 Uc maximum and a drop-out at or below 0.1 Uc, over -40 to 60 °C, for both AC and DC. Applied to this range, 0.8 x 24 V is 19.2 V and 1.1 x 60 V is 66 V. The coil carries a built-in bidirectional peak limiting diode suppressor, so a separate suppressor is not normally needed. Because this coil accepts both AC and DC across 24 to 60 V, it is a practical spare for plants with mixed control voltages. Check the lowest voltage the control supply can reach during a battery discharge or a heavy load step, since the datasheet gives a pull-in threshold of 0.8 Uc (about 19 V at the bottom of the range).

Commissioning check on a 24 to 60 V coil: measure the DC voltage at the coil terminals under closing, not at the power supply. The pull-in limit is 0.8 Uc of the band’s lower value, so a 24 V system that sags below about 19 V will fail to close. Drop-out is at 0.1 Uc, so a released coil should read well below 6 V.

Wiring a 24 to 60 V coil: low-voltage DC is usually distributed from a regulated power supply, so size that supply for the 170 VA (136 W for this coil) closing demand and make sure the cable volt drop at the contactor stays above 0.8 Uc. A reverse-polarity diode is not needed because the coil is rated for AC and DC.

Typical homes for the LC1D115ABNE: PLC-driven motor starters on 24 V DC control rails, battery-backed 48 V systems in telecom and remote sites, and machines where the contactor must be switched by a relay or transistor output without any mains-level control wiring.

Points to confirm before ordering the LC1D115ABNE

• Motor size: up to 55 kW at 400 V in AC-3, 59 kW at 415 V.
• Whether the starter is direct-on-line or a star-delta or soft-starter bypass, since the contactor sees different currents.
• Coil voltage band (24-60, 48-130, 100-250 or 200-500 V AC/DC) and available control power.
• Terminal style: ring lugs or busbars (A6 references) versus connector (A references).
• Fuse or breaker for short-circuit protection: 125 A aM at up to 440 V per the datasheet.
• Overload protection: electronic overload relay or motor protection suitable for 115 A frames.
• Check the control supply type (24 V DC, 48 V DC or 24 to 60 V AC) and that it can supply the closing power of the coil, not only the hold-in.
• Confirm the 24-60 V AC/DC control supply can deliver the 170 VA inrush at the lowest voltage it reaches in operation.

Coil options beside the LC1D115ABNE on the connector version

The table lists the 115 A connector terminals references in this series; the coil code is the only difference inside the group. The ring lug and busbar twin with the same coil is LC1D115A6BNE.

Against the other coil bands of this frame, the 24 to 60 V AC/DC coil is the lowest-voltage choice and the only one that can be driven from a 24 V DC rail. The 48 to 130 V band starts at 48 V and cannot close reliably on 24 V, so the two are not interchangeable at the bottom of their ranges.

Typical applications of the LC1D115ABNE in Oman and the GCC

A 115 A contactor typically starts 45 to 55 kW pumps, large fans, compressors and crushers, and is also used for switching resistive banks and transformer-fed heating. In Oman and the GCC it is found in MCC starter buckets for water treatment, in desalination feed pump drives and in industrial ventilation.

The datasheet lists a protective treatment of ‘None’ for this frame, against ‘TH’ on the compact 9 to 25 A contactors, so a heavy contactor in a humid or salt-laden coastal atmosphere should be inside a sealed, ventilated panel instead of exposed to air. Summer temperatures in the region also call for attention to the 60 °C operating limit and the derating up to 70 °C given in the datasheet.

Information to send with an RFQ for the LC1D115ABNE

• The reference LC1D115ABNE and the quantity required
• The coil voltage on any contactor it replaces, and whether the control is AC or DC
• Motor power, supply voltage and starter type, so the 115 A frame can be confirmed
• Terminal style on site: ring lugs or busbars, or connector terminals
• Delivery location and timing, and whether the item is a spare or new installation

Documents and quotation

A datasheet for this product is attached on this page. It lists the electrical, mechanical and environmental data summarised above.

Send us the part number LC1D115ABNE, the quantity and the application and we will confirm availability and a quotation. Seven Star LLC is an independent supplier in Muscat and is not affiliated with the manufacturer.