Schneider Electric (Square D) LC1D09G7 Contactor

The Schneider Electric (Square D) LC1D09G7 is a high-performance TeSys Deca contactor designed for rigorous motor control and resistive load applications. This 3-pole unit is rated for 9 Amps (AC-3) and up to 25 Amps (AC-1), providing reliable switching and operation in HVACR systems and industrial environments. Engineered with a 120V AC 50/60Hz coil, this non-reversing contactor is a drop-in replacement for 037H002123 and 037H001523. As a veteran-grade 3-pole 9A contactor, it features built-in 1 NO + 1 NC auxiliary contacts to simplify control circuit logistics. The screw clamp terminals ensure secure vibration-resistant connections, supporting motor ratings up to 5 HP at 480V and 7.5 HP at 600V. For contractors upgrading older panels, the LC1D09G7 offers flexible DIN rail or plate mounting and is compatible with the full range of TeSys LADN auxiliary blocks and LRD overload relays. Please note that when replacing legacy parts like the 037H002123, any existing auxiliary switches must also be replaced to ensure system compatibility.

Key Benefits:

• Broad Compatibility: Functions as the factory-spec replacement for carrier-style part 037H002123 and 037H001523.
• Integrated Auxiliaries: Features factory-installed 1NO and 1NC contacts for immediate signaling and interlocking.
• Thermal Resilience: Rated for high-cycle rates up to 3600 cycles/hour and ambient temperatures up to 60°C.
• Compact Footprint: Standard 45mm width allows for high-density mounting on 35mm DIN rails.
• Finger-Safe Safety: IP20-rated terminals prevent accidental contact during live testing and maintenance.

Common Questions:

What happens if the coil voltage fluctuates?
Using a 120V coil with low voltage can cause "chattering," leading to pitted contacts and premature mechanical failure. Always verify that your control circuit delivers a steady 120VAC to the A1 and A2 terminals.

Can I reuse the auxiliary switches from the 037H002123?
No. When replacing the 037H002123 with the LC1D09G7, you must also replace any snap-on auxiliary contacts with current TeSys Deca series accessories to ensure proper mechanical engagement.

Is this contactor suitable for 3-phase air conditioner compressors?
Yes, the Square D LC1D09G7 is rated for 5 HP at 460V, making it ideal for standard smaller 3-phase commercial HVAC compressors and fan motors.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.