3 Pole Contactor Comparison: Choosing Between 30 Amp and 80 Amp for Your Industrial Needs

Why Size Matters in 3 Pole Contactors 

When selecting a 3 pole contactor for your electrical system, the decision between a 30 amp and 80 amp model goes far beyond just current rating. Factors like application type, installation environment, and motor load capacity play a crucial role. At Contactor Depot, we help professionals and contractors make the right decision by offering top-rated components backed by expert guidance.

Power and Performance – 30 Amp vs 80 Amp

30 Amp Contactors:

These are ideal for light-to-medium duty applications. With a full load amp rating of 32A inductive and 50A resistive, they are typically used for:

Residential HVAC systems

Small motors and lighting banks

Low-to-moderate switching frequency

80 Amp Contactors:

Designed for heavy-duty, industrial-grade operations. These units can handle up to 125A resistive and 80A inductive loads, making them suitable for:

Large industrial motors

High-frequency switching operations

Compressors and advanced automation systems

Dimensions and Mounting Differences

Shopcorp 30 Amp 3 Pole:

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Compact design (2.22'' x 3.50'' x 3.50'') with 35mm DIN rail mounting. Perfect for limited-space installations.

Shopcorp 80 Amp 3 Pole:

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Larger frame (3.35 x 4.92 x 5.00 inches), built to withstand high operational demands. DIN compatible and engineered for easy panel integration.

Coil Characteristics and Voltage Compatibility

Both the 30 amp and 80 amp contactors support 220-240VAC coils, with slight differences:

• 30A: Coil inrush 70VA / Sealed 7.5VA

• 80A: Coil inrush 300VA / Holding 57VA

Higher coil power in the 80A unit ensures stable operation in demanding industrial environments.

Use Case Scenarios

Choosing Based on Load Diversity

If your system includes a mix of resistive and inductive loads, always prioritize the inductive rating. For example, the 80A model supports 45kW motors and frequent stop-start cycles, while the 30A unit is better suited for static or lightly-loaded operations.

Shop Contactor Depot for Certified 3 Pole Contactors

Both models Shopcorp 30A 3 Pole and Shopcorp 80A 3 Pole are:

IEC compliant

DIN rail compatible

Built with auxiliary 1NO/1NC contacts

Backed by our Free Technical Support and Next Day Delivery service

Find them at Contactor Depot, where quality meets performance.

Selecting between a 30 amp and an 80 amp 3 pole contactor depends on your power requirements, space limitations, and long-term operation plans. Whether you're upgrading a small HVAC panel or setting up a heavy-duty industrial circuit, Contactor Depot offers the certified components and expertise you need.