Contactor 25A 1 NO/1 NC 48V 50-60HZ

The Schneider Electric TeSys Deca LC1D25E7 contactor is a 3-pole power contactor with 3 normally open main contacts, designed for controlling motors and resistive loads in industrial, commercial, and HVAC electrical panels. It offers a rated operational current of 25 A in AC-3 category up to 440 V, can control motors up to 11 kW at 380-400 V, and includes a 48 V AC control coil at 50/60 Hz.

In addition to the three main power contacts, it integrates 1 normally open auxiliary contact and 1 normally closed auxiliary contact as standard. Its compact 45 mm width, screw terminals, and the option for DIN rail or panel mounting make it easy to integrate into direct starters, automation systems, machinery, and HVAC systems.

25 A Contactor for Motors

The Schneider Electric LC1D25E7 is specifically designed for switching electric motors. In AC-3 utilization category, it supports a rated current of 25 A up to 440 V and an ambient temperature of up to 60 °C within the manufacturer’s specified conditions.

AC-3 category applies to common starting and stopping operations of squirrel-cage motors, where the contactor must withstand starting currents and open the circuit once the motor is running.

Motor Power up to 11 kW at 400 V

Schneider Electric specifies the following motor power ratings for this reference in AC-3 category:

• 220-230 V AC: up to 5.5 kW.
• 380-400 V AC: up to 11 kW.
• 415-440 V AC: up to 11 kW.
• 500 V AC: up to 15 kW.
• 660-690 V AC: up to 15 kW.

In a typical 400 V three-phase network, the LC1D25E7 is therefore rated for motors up to 11 kW, provided the motor’s rated current and actual starting conditions are compatible with the contactor.

Up to 40 A for AC-1 Resistive Loads

In addition to motor applications, the LC1D25E7 can be used with resistive or slightly inductive loads. Schneider Electric specifies an operational current of up to 40 A in AC-1 category at voltages up to 440 V.

This capability allows it to be used, when properly sized, in applications such as electric heating, heating elements, and other receivers compatible with AC-1 category.

48 V AC 50/60 Hz Control Coil

The E7 suffix identifies a 48 V AC control coil at 50/60 Hz.

This control voltage allows the contactor to be operated from different compatible automation devices, such as:

• Control relays.
• Programmable logic controllers.
• Pressure switches.
• Thermostats.
• HVAC controllers.
• Time relays.
• Machine control circuits.

When the coil is energized, the main contacts close and supply the load. When the control voltage is removed, the mechanism returns the contacts to their rest position.

3 Normally Open Main Contacts

The power circuit has a 3P configuration with 3 NO contacts. The three poles are actuated simultaneously by the electromagnetic coil, allowing the three phases of a three-phase load to be connected and disconnected.

Therefore, the 1 NO + 1 NC indication in the commercial title does not refer to the main contacts, but to the integrated auxiliary contacts.

Integrated 1 NO + 1 NC Auxiliary Contacts

The Schneider Electric LC1D25E7 includes as standard:

• 1 normally open auxiliary contact.
• 1 normally closed auxiliary contact.

These auxiliary contacts enable functions such as:

• Electrical interlocking.
• Status indication.
• Feedback to a PLC.
• Interlocking between contactors.
• Pilot light control.
• Automation sequences.

The auxiliary contacts are mechanically linked in accordance with IEC 60947-5-1, and the NC contact has mirror contact function in accordance with IEC 60947-4-1.

Operating Voltage up to 690 V AC

The main circuit is designed for a rated operational voltage of up to 690 V AC, with frequencies between 25 and 400 Hz within the specified operating conditions.

Its dielectric characteristics include:

• Rated insulation voltage Ui: 690 V according to IEC 60947.
• Rated impulse withstand voltage Uimp: 6 kV.
• Overvoltage category: III.

High Making and Breaking Capacity

Schneider Electric specifies for the power circuit a rated making capacity of 450 A at 440 V and a breaking capacity of the same value under the conditions indicated by IEC 60947.

These characteristics are part of the electromechanical performance of the contactor and do not replace the short-circuit protection that must be installed upstream.

DIN Rail or Panel Mounting

The LC1D25E7 supports DIN rail mounting or direct panel mounting, making it easy to integrate into both modular panels and conventional industrial enclosures.

Its width of only 45 mm allows several contactors and protection devices to be installed in limited spaces.

Screw Terminals

The reference uses screw terminals for both the power circuit and the control circuit.

In the main circuit it supports, among other configurations:

• Rigid conductor: up to 10 mm².
• Flexible conductor: up to 10 mm² depending on preparation and number of conductors.
• Power circuit tightening torque: 2.5 Nm.

For the control circuit it supports conductors up to 4 mm² in certain configurations, with an approximate tightening torque of 1.7 Nm.

High Mechanical and Electrical Durability

The Schneider Electric LC1D25E7 is designed for applications with a high number of switching operations.

• Mechanical durability: up to 15 million cycles.
• Electrical durability: approximately 1.65 million cycles at 25 A in AC-3 up to 440 V.
• Maximum switching frequency: up to 3,600 cycles per hour at 60 °C.

Fast Switching Times

The electromagnetic mechanism provides reduced closing and opening times:

• Closing time: approximately 12-22 ms.
• Opening time: approximately 4-19 ms.

These performance characteristics make it suitable for industrial automation with frequent and fast switching operations.

Coil Consumption

The standard 48 V AC coil has the following approximate values:

• Inrush power: 70 VA.
• Holding power at 50 Hz: 7 VA.
• Holding power at 60 Hz: 7.5 VA.
• Thermal dissipation: approximately 2-3 W.

These values should be taken into account when sizing the control transformer or auxiliary circuit supplying the coil.

IP20 Protection Rating

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

As a panel component, it must be installed inside a suitable enclosure to provide the degree of protection required by the installation environment.

Applications of the Schneider Electric LC1D25E7

The contactor can be used in a wide range of industrial and commercial applications, including:

• Three-phase electric motors.
• Pumps.
• Fans.
• Compressors.
• HVAC equipment.
• Industrial machinery.
• Transport systems.
• Electric heating elements.
• Automation panels.
• Direct motor starters.

LC1D25E7 Dimensions

• Width: 45 mm.
• Height: 85 mm.
• Depth: approximately 92 mm.
• Weight: approximately 0.37 kg.

Its compact format makes it easy to install in electrical panels with limited space without sacrificing a 25 A AC-3 switching capacity.

Technical Features of the Schneider Electric LC1D25E7

• Brand: Schneider Electric.
• Reference: LC1D25E7.
• Range: TeSys Deca.
• Type: power contactor.
• Application: motor and resistive load control.
• Number of poles: 3P.
• Main contacts: 3 NO.
• Integrated auxiliary contacts: 1 NO + 1 NC.
• Rated current AC-3/AC-3e: 25 A up to 440 V.
• Rated current AC-1: 40 A up to 440 V.
• Motor power at 220-230 V AC-3: 5.5 kW.
• Motor power at 380-400 V AC-3: 11 kW.
• Motor power at 415-440 V AC-3: 11 kW.
• Motor power at 500 V AC-3: 15 kW.
• Motor power at 660-690 V AC-3: 15 kW.
• Power at 400 V AC-4: 5.5 kW.
• Coil voltage: 48 V AC.
• Coil frequency: 50/60 Hz.
• Power circuit operating voltage: up to 690 V AC.
• Rated insulation voltage Ui: 690 V according to IEC.
• Rated impulse withstand voltage Uimp: 6 kV.
• Utilization categories: AC-1, AC-3 and AC-4.
• Mounting: DIN rail or panel.
• Terminals: screw.
• Mechanical durability: up to 15 million cycles.
• Electrical durability: approximately 1.65 million cycles at 25 A AC-3.
• Maximum switching frequency: 3,600 cycles/h.
• Closing time: 12-22 ms.
• Opening time: 4-19 ms.
• Front protection rating: IP20.
• Operating ambient temperature: -5 to 60 °C.
• Width: 45 mm.
• Height: 85 mm.
• Depth: approximately 92 mm.
• Weight: approximately 0.37 kg.
• Main standards: IEC/EN 60947-4-1 and IEC/EN 60947-5-1.

Compact Contactor for Motors up to 11 kW

The Schneider Electric TeSys Deca LC1D25E7 combines a 25 A AC-3/AC-3e rating, motor power up to 11 kW at 400 V, a 48 V AC coil, and integrated 1 NO + 1 NC auxiliary contacts in a compact 45 mm-wide format.

Its DIN rail or panel mounting option, high durability, and compatibility with TeSys accessories make it a suitable solution for motors, pumps, fans, machinery, and HVAC equipment.

Important: the LC1D25E7 is a switching device and does not replace overload and short-circuit protection. In motor applications, it must be combined with a motor protection circuit breaker, thermal overload relay, and/or short-circuit protection device properly sized according to the installation characteristics.