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YQNT LC1D2510 25A AC contactor with three main poles and one normally open auxiliary contact

Electrical Contactor 4 Pole AC Type/ LC1 220VAC 380VAC Contactor /Magnetic Contactor LC1d2510

LC1D2510 25A 3-Pole AC Magnetic Contactor with 1NO Auxiliary Contact

The YQNT LC1D2510 is a 25A-class AC magnetic contactor designed for remote switching and control of suitably rated AC circuits, including three-phase motor applications. It features three normally open main contacts (3NO) and one built-in normally open auxiliary contact (1NO, terminals 13–14) for control or indication circuits.

Key Specifications

Model: LC1D2510
Rated Current Class: 25 A
Main Contacts: 3-Pole (3NO)
Auxiliary Contact: 1NO (13–14)
Control Coil: M7-marked AC coil (pictured version)
Application: AC motor control and remote circuit switching

Confirm the required coil voltage and frequency, rated operating voltage, and AC-3 current rating before ordering.

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Product Description

YQNT LC1D2510 — Product Overview & Technical Selection

The YQNT LC1D2510 is a 25A-class, 3-pole AC magnetic contactor with one built-in normally open auxiliary contact (1NO). It is intended for remote switching in appropriately rated AC control circuits, including three-phase motor-control applications.

The contactor shown features three main power-contact pairs, identified as 1/L1–2/T1, 3/L2–4/T2, and 5/L3–6/T3, together with a separate 13–14 normally open auxiliary contact.

Unlike a genuine 4-pole power contactor, the LC1D2510 has three main switching poles. Its additional 1NO auxiliary contact is intended for a suitably rated control or indication circuit and must not be used as a fourth main power pole.

Understanding the 25A Rating

The LC1D2510 belongs to the 25A contactor class. However, selecting a contactor for a motor requires more than checking the amperage in its model number.

The rated operational current (Ie) must be considered together with the rated operational voltage (Ue), utilization category, motor nameplate current, and intended switching duty.

For example, a contactor's AC-3 rating is associated with specified motor starting and stopping conditions. Applications involving frequent inching, plugging, or other demanding switching duties may require evaluation under different utilization categories, including AC-4.

Do not assume that a 25A contactor is suitable for every 25A load. The correct decision depends on the verified product ratings and operating conditions.

Coil Voltage and Control-Circuit Selection

The pictured LC1D2510 carries the coil identification M7.

The control-coil voltage (Uc) is separate from the main-circuit rated operational voltage (Ue). A contactor may use a control supply at one voltage while switching an independently rated power circuit at another voltage.

Before ordering, confirm the required control voltage, frequency, and complete coil designation. The supplied product's coil marking or approved technical documentation must be used to verify the correct electrical rating.

Detailed Photos

Electrical Contactor 4 Pole AC Type/ LC1 220VAC 380VAC Contactor /Magnetic Contactor LC1d2510

Main and Auxiliary Terminal Identification

Terminal pair	Function
1/L1 – 2/T1	Main switching contact, pole 1
3/L2 – 4/T2	Main switching contact, pole 2
5/L3 – 6/T3	Main switching contact, pole 3
13 – 14	Normally open auxiliary contact (1NO)

The auxiliary contact has its own electrical ratings and must not be treated as having the same switching capacity as the main contacts.

Motor Protection and Accessory Coordination

The LC1D2510 performs an electromagnetic switching function. It does not independently provide complete motor overload or short-circuit protection.

When used in a motor starter, it should be coordinated with appropriately selected overload and short-circuit protective devices.

A matching overload relay must be selected according to the motor's nameplate current, operating conditions, required adjustment range, and verified compatibility with the contactor.

Before Requesting a Quotation

For accurate specification matching, please provide:

Required control-coil voltage and frequency.
Main-circuit operating voltage and load type.
Motor rated power and nameplate current, if applicable.
Required auxiliary contacts and protective accessories.
Order quantity, destination country, and documentation requirements.

YQNT can review the requested configuration and available technical documentation before quotation.

Q1: Is the LC1D2510 a 3-pole or 4-pole contactor?

The LC1D2510 is a 3-pole AC contactor with three normally open main contacts (3NO) and one built-in normally open auxiliary contact (1NO, terminals 13–14). The auxiliary contact is not a fourth power pole.

Q2: Can the LC1D2510 25A contactor control a 380V or 400V three-phase motor?

It can be considered for three-phase motor control, provided the motor's rated current, operating voltage, and switching duty fall within the contactor's verified AC-3 ratings. The 25A rating alone does not determine motor compatibility.

Q3: What coil voltage does the LC1D2510 use?

The pictured LC1D2510 features an M7-marked AC control coil. Confirm the exact coil voltage and frequency on the product label before ordering. The control coil voltage (Uc) is different from the main circuit voltage (Ue).

Q4: Does the LC1D2510 provide motor overload protection?

No. The LC1D2510 switches the motor circuit but does not provide independent overload or short-circuit protection. It must be coordinated with appropriately rated overload and short-circuit protective devices.

Q5: What information is needed when ordering the YQNT LC1D2510?

Please specify the required coil voltage and frequency, motor voltage and rated current, application, order quantity, and any accessory or certification requirements. YQNT can then confirm the appropriate configuration before quotation.