Contactor 40A 1 NO/1 NC 230V 50-60HZ 4P

The Schneider Electric LC1DT40P7 contactor from the TeSys Deca range is a power contactor with 4 poles and 4 normally open main contacts (4 NO), designed for control and switching of resistive loads in AC-1 utilization category. It offers a rated operational current of 40 A up to 440 V AC and is equipped with a 230 V AC control coil at 50/60 Hz, as well as 1 NO auxiliary contact and 1 NC auxiliary contact as standard.

Its compact design of only 45 mm width, DIN rail or plate mounting, and screw terminals make it easy to integrate into electrical control, automation, and HVAC panels. It is especially suited for switching non-inductive or slightly inductive loads, such as electric heating systems, resistors, and other industrial and HVAC applications compatible with the AC-1 category.

40 A TeSys Deca contactor in AC-1 category

The Schneider Electric LC1DT40P7 has a rated operational current Ie of 40 A for the power circuit at voltages up to 440 V AC and an ambient temperature of up to 60 °C, within the AC-1 utilization category.

The AC-1 category is mainly intended for non-inductive or slightly inductive loads. Therefore, this model is especially suitable for switching resistive loads and HVAC or heating applications compatible with its electrical characteristics.

The rated operational voltage of the power circuit reaches up to 690 V AC at frequencies from 25 to 400 Hz and up to 300 V in direct current, within the conditions specified by Schneider Electric.

4 normally open main poles

The contactor features a 4-pole configuration with 4 normally open main contacts. The four poles change state when the control coil is energized, allowing the power lines of the installation to be connected or disconnected simultaneously.

This configuration is especially useful in circuits where four conductors or several supply lines need to be switched by a single contactor.

Integrated 1 NO + 1 NC auxiliary contacts

In addition to its four main power contacts, the LC1DT40P7 incorporates one normally open auxiliary contact and one normally closed auxiliary contact as standard.

The auxiliary contacts allow the contactor to be integrated into control, signaling, interlocking, or automation circuits without the immediate need to add an external auxiliary block.

• Main contacts: 4 NO.
• Integrated auxiliary contacts: 1 NO + 1 NC.
• Conventional thermal current of the signaling circuit: 10 A at 60 °C.
• Minimum switching current: 5 mA.
• Minimum switching voltage: 17 V.

The NO and NC auxiliary contacts are mechanically linked according to IEC 60947-5-1, and the NC contact has mirror contact function according to IEC 60947-4-1.

230 V AC control coil

The reference ending in P7 is equipped with a 230 V AC control coil for 50/60 Hz. This control voltage is common in electrical panels supplied directly from low-voltage networks and allows the contactor to be operated from thermostats, relays, controllers, PLCs, and other compatible devices.

Schneider Electric specifies an inrush power of approximately 70 VA at both 50 and 60 Hz. Once the contactor is closed, the holding consumption is approximately 7 VA at 50 Hz and 7.5 VA at 60 Hz.

The coil thermal dissipation during operation is approximately between 2 and 3 W.

Designed for industrial and HVAC applications

Schneider Electric develops the TeSys Deca range for professional load control applications in industrial, commercial, and HVAC installations.

The LC1DT40P7 can be used, provided the electrical sizing is appropriate, in applications such as:

• Electric heating control.
• Electric heating systems.
• HVAC and air conditioning equipment.
• Automation electrical panels.
• Resistive load control installations.
• Lighting systems and other AC-1 compatible loads.
• Distribution and switching panels.
• Industrial automation.

For motor applications or other inductive loads, the utilization category must be verified and the contactor selected according to Schneider Electric’s specific tables, since the 40 A rating of this reference corresponds to AC-1.

High making and breaking capacity

In the main circuit, Schneider Electric specifies a rated making capacity of 450 A at 440 V according to IEC 60947. The rated breaking capacity indicated for the power circuit is also 450 A at 440 V.

The device also withstands different short-time currents:

• 380 A for 1 second at a maximum temperature of 40 °C.
• 240 A for 10 seconds.
• 120 A for 1 minute.
• 50 A for 10 minutes.

690 V insulation voltage

The LC1DT40P7 has a rated insulation voltage Ui of 690 V for the power circuit according to IEC 60947-4-1.

The rated impulse withstand voltage Uimp is 6 kV, with overvoltage category III, providing suitable dielectric characteristics for installation in professional electrical panels.

Fuse protection

Schneider Electric specifies different fuse ratings depending on the type of coordination required for the power circuit:

• 40 A gG: for type 2 coordination, up to 690 V.
• 63 A gG: for type 1 coordination, up to 690 V.
• 10 A gG: for the signaling circuit, according to IEC 60947-5-1.

The final selection of protection devices must be made taking into account the circuit, the available short-circuit current, and the coordination criteria established for the installation.

High mechanical and electrical durability

The contactor is designed to withstand a high number of operations throughout its service life. Schneider Electric declares a mechanical durability of up to 15 million cycles.

For operation at 40 A in AC-1 category and operating voltage up to 440 V, the declared electrical durability reaches approximately 1.4 million cycles.

The maximum operating frequency can reach 3,600 cycles per hour at 60 °C, within the conditions established by the manufacturer.

Fast switching times

The electromagnetic coil allows the contactor to open and close in reduced times. Schneider Electric indicates:

• Closing time: between 12 and 22 ms.
• Opening time: between 4 and 19 ms.

These performance characteristics make the contactor suitable for automatic systems requiring frequent and repetitive switching.

DIN rail or plate mounting

The Schneider Electric LC1DT40P7 supports mounting on rail or directly on plate, providing flexibility during electrical panel design and assembly.

Its reduced width of 45 mm helps optimize available space, especially in panels incorporating multiple contactors and control devices.

Screw connection terminals

The power circuit and control circuit use screw terminals, allowing robust and accessible connections during installation and maintenance.

For the main circuit, conductor cross-sections of up to 16 mm² for rigid conductors and up to 10 mm² for flexible conductors are accepted, depending on the conductor type. The control circuit accepts conductors up to 4 mm² in certain configurations.

Schneider Electric specifies a tightening torque of approximately 1.8 Nm for the power terminals and 1.7 Nm for the control circuit terminals.

IP20 front protection

The front face of the contactor has an IP20 protection rating according to IEC 60529.

As a component intended for panel mounting, it must be installed inside an enclosure that provides the protection degree required by the environment and applicable regulations.

Wide operating temperature range

The LC1DT40P7 is designed to operate at ambient temperatures between -40 and 60 °C without performance reduction within the specified conditions.

It can operate up to 70 °C with the corresponding reduction or derating indicated by Schneider Electric.

The operating altitude indicated by the manufacturer reaches up to 3,000 meters.

Technical characteristics of the Schneider Electric LC1DT40P7

• Brand: Schneider Electric.
• Reference: LC1DT40P7.
• Range: TeSys Deca / TeSys D.
• Type: power contactor.
• Application: resistive loads.
• Utilization category: AC-1.
• Number of poles: 4P.
• Main contacts: 4 NO.
• Integrated auxiliary contacts: 1 NO + 1 NC.
• Rated operational current: 40 A at ≤ 440 V AC AC-1.
• Conventional thermal current: 40 A at 60 °C for the power circuit.
• Rated operational voltage: up to 690 V AC in the power circuit.
• Power circuit frequency: 25-400 Hz.
• Coil voltage: 230 V AC.
• Coil frequency: 50/60 Hz.
• Coil inrush power: 70 VA.
• Holding consumption: 7 VA at 50 Hz / 7.5 VA at 60 Hz.
• Coil thermal dissipation: 2-3 W.
• Power dissipation per pole: 3.2 W in AC-1.
• Rated insulation voltage Ui: 690 V.
• Rated impulse withstand voltage Uimp: 6 kV.
• Overvoltage category: III.
• Making capacity: 450 A at 440 V.
• Breaking capacity: 450 A at 440 V.
• Mechanical durability: up to 15 million cycles.
• Electrical durability: up to 1.4 million cycles at 40 A AC-1 and ≤ 440 V.
• Maximum switching frequency: 3,600 cycles/h at 60 °C.
• Closing time: 12-22 ms.
• Opening time: 4-19 ms.
• Mounting: rail or plate.
• Connections: screw terminals.
• Front protection rating: IP20.
• Ambient temperature: -40 to 60 °C without performance reduction; up to 70 °C with derating.
• Operating altitude: up to 3,000 m.
• Width: 45 mm.
• Height: 91 mm.
• Depth: 99 mm.
• Weight: approximately 0.425 kg.

Compact contactor for switching resistive loads

The Schneider Electric TeSys Deca LC1DT40P7 provides a compact and robust solution for automatic switching of loads up to 40 A in AC-1 category. Its four NO main contacts allow four-pole circuits to be controlled, while the integrated 1 NO + 1 NC auxiliary contacts make it easy to incorporate into automation, interlocking, and signaling circuits.

The 230 V AC 50/60 Hz coil, rail or plate mounting, screw terminals, and a width of only 45 mm make installation easy in professional electrical panels intended for industrial, commercial, and HVAC applications.

Important: the 40 A rating corresponds to AC-1 utilization category for resistive or slightly inductive loads. For motors or other loads with high starting current, the contactor must be selected according to the applicable utilization category and Schneider Electric sizing tables.