Schneider Electric LC1D25 Contactor

At a glance: The Schneider Electric LC1D25 is a TeSys D series 3-pole 25A AC contactor, suitable for AC-3 motor control (11kW/15HP at 400V). Standard width: 45mm. Supports DIN rail and screw mounting. Coil voltages available in multiple AC/DC ratings. Matching thermal overload relays: LRD16‑LRD32. Cross-brand replacements include ABB A16-30-10, Siemens 3RT6026-1AN20, etc.

Part Number Interpretation

Base model: LC1D25

Full model format: LC1D25[Auxiliary Contacts][Coil Voltage][Frequency][Special Features]

Code	Meaning	Example
LC1D	TeSys D series standard AC contactor	–
25	Rated operational current 25A (AC-3, 400V)	–
2010/1/11	Auxiliary contact configuration: 1NO/0NC, 0NO/1NC, 1NO/1NC	LC1D2510M7C (1NO)
M/Q/B/P	Coil voltage code: M=AC220V, Q=AC380V, B=AC24V, P=AC230V	LC1D2510M7C (AC220V)
7月5日	Frequency: 7=50/60Hz universal, 5=50Hz only	LC1D2510M7C (universal)
C/BL	Special features: C=standard, BL=low-power	LC1D2510M7C (standard)

Key Specifications

2.1 Main Circuit Parameters

Parameter	Value	Notes
Poles	3-pole (3NO)	Standard configuration
Rated operational current (AC‑3, 400V)	25A	Typical for motor control
Rated operational current (AC‑1, 690V)	40A	Resistive load
Rated operational voltage	≤690V AC, ≤300V DC	Main circuit
Motor power (400V 3-phase)	11kW (15HP)	AC-3 duty
Motor power (220V 3-phase)	5.5kW (7.5HP)	AC-3 duty
Rated insulation voltage	1000V	IEC standard
Rated impulse withstand voltage	8kV	–

2.2 Control Circuit Parameters

Parameter	Value	Notes
Coil voltage range	AC24V~400V, DC24V~220V	Multiple options available
Coil power	Inrush: ≤9.5VA, Holding: ≤2VA	Standard version; lower for low-power type
Pick-up voltage	85%~100% Un	–
Drop-out voltage	20%~75% Un	–
Operating frequency	Up to 3600 operations/hour	AC-3 duty

2.3 Mechanical & Mounting Parameters

Parameter	Value	Notes
Dimensions	45×85×92mm (without cover) / 45×85×101mm (with cover)	Common for LC1D25–LC1D38
Mounting	35mm DIN rail or screw mounting	Both compatible
Weight	Approx. 370g	Standard version
Protection degree	IP20	Body only
Operating temperature	-5℃~+60℃	Wide-temperature version available
Mechanical durability	≥10 million operations	No-load
Electrical durability	≥1 million operations	At rated AC-3 conditions

Selection Guide

3.1 Load Type Matching

AC-3 (motor control): Direct use for motors up to 25A, max. 11kW at 400V

AC-1 (resistive load): Up to 40A, suitable for heaters, lighting, etc.

DC load: Confirm DC rating; derating to ≤70% of AC rating recommended

3.2 Coil Voltage Selection

Application	Recommended coil voltage	Advantage
Industrial automation	AC220V (M7) / AC380V (Q7)	Matches common factory voltages
Safety control circuits	AC24V (B7) / DC24V	Safety extra-low voltage
DC systems	DC24V~110V	Reduces electromagnetic interference

3.3 Auxiliary Contact Extension

Standard: 1NO + 1NC built-in auxiliary contacts

Expansion: Add LAD series auxiliary modules; up to 4NO + 4NC

3.4 Protection Coordination

Overload protection: Use with LRD16‑LRD32 thermal overload relays (setting: 6.4~32A)

Short-circuit protection: Recommended C65N‑D/3P 32A or NSX series circuit breakers

Surge suppression: RC snubber for AC coils; freewheeling diode for DC coils

3.5 Mounting & Heat Dissipation

Mount vertically; keep ≥5mm above/below, ≥2mm left/right

Derate 10–15% for side-by-side installation

Above 40°C, derate approx. 1% per °C increase

Cross-Brand Replacements

Brand	Direct Replacement	Key Comparison
ABB	A16-30-10 (16A) / A26-30-10 (26A)	Same dimensions; A26 closer to 25A
Siemens	3RT6026-1AN20 (25A)	Identical mounting, 1NO+1NC
Mitsubishi	S-T25 (25A)	Standard 3-pole, AC220V/380V coils
LS	GMC-22 (22A) / GMC-32 (32A)	Cost-effective; GMC-32 for heavy duty
Chint	NC1-2510 (25A)	Domestic alternative, cost advantage

Common Full Models & Applications

Full Model	Description	Typical Application
LC1D2510M7C	3P 25A, 1NO, AC220V coil, 50/60Hz	Water pumps, fans
LC1D2501Q7C	3P 25A, 1NC, AC380V coil, 50/60Hz	Compressors, conveyors
LC1D2511B7C	3P 25A, 1NO+1NC, AC24V coil	Safety circuits, E-stop
LC1D25BL	3P 25A, low-power DC24V coil	Battery systems, energy-saving equipment

Schneider Electric LC1D25 Contactor Mounting Dimensions Manual

At a glance: Standard dimensions: W45mm × H85mm × D92mm (without cover) / D101mm (with cover). Fits 35mm standard DIN rail. Screw mounting: 2×M4 slotted holes, horizontal center distance 35mm, vertical center distance 60–70mm adjustable.

Basic Outline Dimensions (W×H×D)

Configuration	Dimensions (mm)	Dimensions (in)	Notes
Without cover	45 × 85 × 92	1.77 × 3.35 × 3.62	Standard bare version
With cover	45 × 85 × 101	1.77 × 3.35 × 3.98	With safety cover
Low-power type	45 × 85 × 99	1.77 × 3.35 × 3.90	e.g., LC1D25BL

Width 45mm: Common for LC1D25–LC1D38, compact mounting

Height 85mm: Base height without top auxiliary modules

Depth: Varies slightly by cover/coil; refer to actual unit

Mounting Methods & Detailed Dimensions

2.1 DIN Rail Mounting (Recommended)

Fits 35mm standard DIN rail (EN 60715)

Locks onto center rear of contactor

Mount vertically (coil downward) for best cooling and stability

Clearance: ≥5mm top/bottom, ≥2mm left/right; derate 10–15% side-by-side

2.2 Screw Mounting

Parameter	Value	Notes
Mounting holes	2×M4 slotted holes	For M4×8 or M4×10 screws
Horizontal center distance	35mm	Fixed
Vertical center distance	60–70mm	Slotted for adjustment
Mounting plate thickness	1.5–3mm	Galvanized steel or insulation plate
Tightening torque	1.2–1.5N·m	Avoid damage