Schneider Electric LC1D115A6BNE 115 A Contactor 24-60 V AC/DC

LC1D115A6BNE: 115 A TeSys Deca contactor with ring lugs and 24-60 V AC/DC coil

The LC1D115A6BNE is a Schneider Electric TeSys Deca contactor with ring lugs / busbars, 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 Lug. 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 LC1D115A6BNE in Oman and the GCC as an independent supplier based in Muscat.

Reading the reference: LC1D115 is the 115 A TeSys Deca frame, the A6 group marks the ring lugs / busbars 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 LC1D115ABNE. The datasheet gives a body of 152 x 99 x 155 mm (H x W x D) and a net weight of 2.2 kg.

Technical specifications of the LC1D115A6BNE

Ring lugs and busbars on the LC1D115A6BNE

The power circuit of the LC1D115A6BNE is terminated with ring lugs (external diameter 25 mm) or with busbars of 5 x 25 mm cross section, and the datasheet specifies 12 N.m on the M8 hexagonal head (13 mm). That arrangement suits large fixed cable lugs crimped by the panel builder and busbar-connected starters, and it keeps the contact surface bolted rather than clamped. The contactor is plate-mounted only; the datasheet lists no rail mounting for this version.

In the references of this family, the A6 in the part number marks the lug and busbar version, in contrast to the connector version without the 6. This reading comes from the datasheet titles, which describe A6 references as ‘lugs-ring or bars’ and the others as ‘connector’.

24-60 V AC/DC coil and control circuit of the LC1D115A6BNE

The coil of the LC1D115A6BNE 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. The 24 to 60 V AC/DC coil is the low-voltage member of the group. It lets one reference serve a 24 V DC PLC control rail, a 48 V DC battery-backed supply or a 24 V AC transformer, so a panel can be moved between those control systems without changing the contactor. The lower the voltage, the larger the closing current, and the more important it becomes that the control supply and wiring be sized for it.

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 LC1D115A6BNE: 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.

Ratings, motor sizes and short-circuit data of the LC1D115A6BNE

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. For 60 Hz motors the datasheet gives 30 hp at 200/208 V, 40 hp at 230/240 V, 75 hp at 460/480 V and 100 hp at 575/600 V.

Making capacity is 1560 A at 440 V and breaking capacity 1100 A at 440 V. The datasheet pairs the contactor with 125 A aM fuses up to 440 V, 100 A aM up to 690 V, or 200 A gG up to 690 V for the power circuit, and the short-time withstand current is 1280 A for 10 s and 1800 A for 1 s at 40 °C.

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.

The LC1D115A6BNE among the LC1D115 lug-terminal references

The table lists the 115 A ring lugs / busbars references in this series; the coil code is the only difference inside the group. The connector twin with the same coil is LC1D115ABNE.

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.

Selection checklist for the LC1D115A6BNE

• 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.

Typical applications of the LC1D115A6BNE 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 LC1D115A6BNE

• The reference LC1D115A6BNE 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 LC1D115A6BNE, 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.