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MDI Mercury Displacement 235NO-24A-18 2-Pole Contactor 35 AMP 24V Coil

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Special Price $130.07 Regular Price $149.58
In stock
SKU
235NO-24A-18
The MDI Mercury Displacement 235NO-24A-18 Contactor is an essential part used in an HVAC system. It has 2 poles and 35 amp capacity and works with 24V coil for efficient switching. Unlike mechanical relays, however, this mercury displacement contactor is arc-free, has minimal contact damage and an longer longevity. It is used in commercial refrigeration units, air conditioning systems and heating equipment in a silent operation, with resistance to contamination and high durability. This contactor provides consistent and reliable performance and is ideal for applications that require performance and reduced maintenance expenses and as a preferred choice for HVAC systems.
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Refrigeration Coil, HVAC Controls & Electrical
Manufacturer:
https://www.partshnc.com/media/catalog/product/2/3/235no-24a-18.jpg

Specifications

  • Type: Contactor
  • Poles: 2-Poles
  • Current: 35 Amps
  • Voltage: 24V Coil
Manufacturer Name: MDI Mercury Displacement
Product Number: 235NO-24A-18
OEM Part Number: 235NO-24A-18
Product Description: 24V Coil 2P 35Amp Cont
Weight:1.62lbs/734.82g

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Product Questions (2)
Customer Questions
What maintenance is required for the MDI Mercury Displacement 235NO-24A-18 Contactor?

Inspect contact surfaces for pitting, burning, or wear that may reduce switching accuracy. Ensure the coil operates without overheating or electrical pressure. Tighten all wiring connections to prevent arcing or voltage loss. Perform routine load testing to confirm stable switching under operating conditions.

What are the common issues with the MDI Mercury Displacement 235NO-24A-18 Contactor?

  • Contact wear or welding is causing failure to switch properly under load.
  • Coil failure resulting in loss of activation or control response.
  • Overheating during operation reduces contactor accuracy.
  • Electrical arcing damages contact surfaces.

Installation Steps

Step 1: Turn off main power supply for safety.

Step 2: Mount contactor securely on rail or panel.

Step 3: Connect load terminals as per wiring diagram carefully.

Step 4: Connect coil terminals to control supply ensuring correct polarity.

Step 5: Tighten all terminal screws firmly using proper tool.

Step 6: Check wiring insulation and ensure no loose strands before power-up.

Step 7: Restore power and test switching operation carefully with no load.