What is the Cummins C20D6 standby generator used for?

The Cummins C20D6 is designed to provide reliable backup power for homes and light commercial buildings during utility outages. It supports essential systems such as HVAC, lighting, appliances, and business equipment.

How much power does the Cummins C20D6 generator produce?

The Cummins C20D6 delivers 20 kW (20 kVA) of standby power at 60 Hz, making it suitable for medium to large residential properties and small commercial facilities.

Is the Cummins C20D6 a single-phase generator?

Yes, the Cummins C20D6 provides single-phase 120/240 V output, which is ideal for most residential and light commercial electrical systems in the United States.

How quiet is the Cummins C20D6 generator during operation?

This generator operates at approximately 65 dB(A) measured at 7 meters, thanks to its Quiet Connect design, making it one of the quieter liquid-cooled standby generators in its class.

What type of engine is used in the Cummins C20D6?

The generator is powered by a 2.4-liter liquid-cooled Cummins engine that runs at 1800 RPM, offering smooth performance, reduced noise, and long-term reliability.

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Cummins C20D6 - 20kW Quiet Connect Series 120/240V 1 Phase Liquid Cooled Standby Generator - A063P962

Cummins C20D6 - 20kW Quiet Connect Series 120/240V 1 Phase Liquid Cooled Standby Generator - A063P962

Cummins C20D6 Standby Home Generators 20kW - 240V | Portlandia Electric Supply

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Cummins C20D6 - 20kW Quiet Connect Series 120/240V 1 Phase Liquid Cooled Standby Generator - A063P962

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$17,760.48 USD

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Cummins C20D6 - 20kW Quiet Connect Series 120/240V 1 Phase Liquid Cooled Standby Generator - A063P962 $17,760.48

Specifications

Datasheet

Wattage 20kW standby / 18.2kW prime

Fuel Type Diesel

Voltage 120/240V single phase

Phase 1-Phase

Cooling Liquid-Cooled

Noise Level 68.4 dB(A) at 23 ft

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Returns are free in the first 30 days with no restocking or processing fees, although the customer may be responsible for paying return shipping. See our complete return policy on our Shipping, Delivery, and Returns page linked in the footer of this website.

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Our returns policy covers all purchases made through Portlandia Electric Supply. For warranty issues, as authorized distributors, we honor the full manufacturer warranty of ALL the brands on our website. See our complete returns and warranty policies on our Shipping, Deliver, and Returns page.

How long will it take to receive my order?

All orders are processed within 72 hours and you can expect delivery on most orders within 5-7 business days. You will receive access to our customer portal after ordering, where it is easy to track all your shipments. See our Shipping, Delivery and Returns page for more details.

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You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

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Cummins C20D6 – 20kW 120/240 V Single-Phase Quiet Connect Liquid-Cooled Standby Generator

The Cummins C20D6 - 20kW (MPN A063P962) is a compact 20 kW Quiet Connect Series standby generator designed to provide dependable, quiet, and efficient power for residential and light commercial applications. Built with a liquid-cooled 2.4 L Cummins engine, this model offers smooth, automatic operation during outages with minimal noise and low emissions. Engineered for long-term reliability, the C20D6 ensures optimal performance, energy efficiency, and comfort for any property requiring continuous backup power.

Key Features

20 kW (20 kVA) standby rated power at 60 Hz
Single-phase 120/240 V output ideal for homes and small commercial facilities
Liquid-cooled 2.4 L Cummins engine for smooth, efficient operation
Quiet Connect design keeps noise levels as low as 65 dB(A) @ 7 m
Automatic start and seamless transfer for uninterrupted power supply
Cummins PowerCommand® control system provides intelligent monitoring and protection
Capable of running on natural gas or propane (field-selectable fuel configuration)
Corrosion-resistant enclosure suitable for all weather conditions

Electrical Specifications (Standby Rating)

Rated Power (Pmax)	20 kW
Apparent Power (kVA)	20 kVA
Voltage	120/240 V, Single-Phase
Frequency	60 Hz
Power Factor	1.0
Voltage Regulation	±1.0 %
Frequency Regulation	±0.25 %
Fuel Type	Natural Gas or Propane

Mechanical & Engine Data

Engine Model	Cummins 2.4 L Liquid-Cooled Engine
Displacement	2.4 L
Rated Speed	1800 rpm
Cooling System	Liquid-Cooled
Fuel Consumption @ 100% Load (NG)	≈ 250 ft³/hr
Fuel Consumption @ 100% Load (LPG)	≈ 2.7 gal/hr (10.2 L/hr)
Dimensions (L × W × H)	76 in (1930 mm) × 35 in (889 mm) × 47 in (1194 mm)
Weight (Dry)	≈ 1,250 lb (567 kg)

Warranty & Compliance

2-year limited warranty for residential and light commercial standby use
UL 2200 listed and EPA certified for stationary emergency applications
NFPA 110 capable configuration for automatic transfer operation
Complies with ISO 8528-5 generator performance standards

Environmental & Site Ratings

Operating Temperature Range	–20 °F (–29 °C) to 122 °F (50 °C)
Enclosure Material	Powder-Coated Steel, Corrosion-Resistant
Sound Level @ 7 m	~65 dB(A)

What is your return policy?

What’s covered by your return policy?

How long will it take to receive my order?

What are your financing and payment options?

We offer several ways to pay to make getting your solar kit simple:

Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer

You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

How does your Lifetime Customer Support work?

Cummins C20D6 – 20kW 120/240 V Single-Phase Quiet Connect Liquid-Cooled Standby Generator

Key Features

20 kW (20 kVA) standby rated power at 60 Hz
Single-phase 120/240 V output ideal for homes and small commercial facilities
Liquid-cooled 2.4 L Cummins engine for smooth, efficient operation
Quiet Connect design keeps noise levels as low as 65 dB(A) @ 7 m
Automatic start and seamless transfer for uninterrupted power supply
Cummins PowerCommand® control system provides intelligent monitoring and protection
Capable of running on natural gas or propane (field-selectable fuel configuration)
Corrosion-resistant enclosure suitable for all weather conditions

Electrical Specifications (Standby Rating)

Rated Power (Pmax)	20 kW
Apparent Power (kVA)	20 kVA
Voltage	120/240 V, Single-Phase
Frequency	60 Hz
Power Factor	1.0
Voltage Regulation	±1.0 %
Frequency Regulation	±0.25 %
Fuel Type	Natural Gas or Propane

Mechanical & Engine Data

Engine Model	Cummins 2.4 L Liquid-Cooled Engine
Displacement	2.4 L
Rated Speed	1800 rpm
Cooling System	Liquid-Cooled
Fuel Consumption @ 100% Load (NG)	≈ 250 ft³/hr
Fuel Consumption @ 100% Load (LPG)	≈ 2.7 gal/hr (10.2 L/hr)
Dimensions (L × W × H)	76 in (1930 mm) × 35 in (889 mm) × 47 in (1194 mm)
Weight (Dry)	≈ 1,250 lb (567 kg)

Warranty & Compliance

2-year limited warranty for residential and light commercial standby use
UL 2200 listed and EPA certified for stationary emergency applications
NFPA 110 capable configuration for automatic transfer operation
Complies with ISO 8528-5 generator performance standards

Environmental & Site Ratings

Operating Temperature Range	–20 °F (–29 °C) to 122 °F (50 °C)
Enclosure Material	Powder-Coated Steel, Corrosion-Resistant
Sound Level @ 7 m	~65 dB(A)

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