What is the main function of the Briggs and Stratton 400 amp Transfer Switch, 240V, NEMA 3R - 071139?

Its primary function is to automatically transfer electrical loads between utility power and a generator during an outage, ensuring continuous and safe power supply.

Is the Briggs and Stratton 400 amp Transfer Switch, 240V, NEMA 3R – 071139 suitable for outdoor installation?

Yes, the NEMA 3R-rated enclosure makes it weather-resistant and safe for outdoor mounting in most climates.

What size generator works best with this 400-amp transfer switch?

It pairs well with high-capacity generators designed for large homes or commercial operations, typically in the 30–60 kW range, depending on load requirements.

Does this transfer switch operate automatically during power outages?

Yes, it provides fully automatic switching, transferring your electrical load within seconds of detecting utility power loss.

Can this model handle both essential and full-house loads?

Absolutely. Its 400-amp capacity makes it suitable for whole-facility or whole-home load management, depending on installation design.

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400A+ Transfer Switches
Briggs and Stratton 400 amp Transfer Switch, 240V, NEMA 3R - 071139

Briggs & Stratton Briggs and Stratton 400 amp Transfer Switch, 240V, NEMA 3R - 071139 | Portlandia Electric Supply

Available to Order

Order today — we confirm lead time at checkout

Volume Pricing

Call 888-876-0007 for a pallet-quote

Flat Rate Shipping - Calculated at Checkout

Delivery timeframe shown above at checkout

Lifetime Customer Support

Unlimited lifetime support, always available.

Briggs and Stratton 400 amp Transfer Switch, 240V, NEMA 3R - 071139

Trusted by 1,000s of Contractors & Installers

Available to Order — typically ships in 2–4 weeks

SKU PES-PA-ELC-1851

OEM Authorized Dealer Full OEM Warranty Ships in 2–4 weeks

$10,285.00 USD

$ $10,285.00 USD

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Secure checkout · Wire/ACH accepted on quotes · Freight arranged for you

Ships via ground carrier, tracked. Pallet & heavy orders go LTL freight — our team confirms freight within 1 business day.

SKU: PES-PA-ELC-1851
MPN: 071139

Secure Payment Methods

Available to Order

Order today — we confirm lead time at checkout

Volume Pricing

Call 888-876-0007 for a pallet-quote

Flat Rate Shipping - Calculated at Checkout

Delivery timeframe shown above at checkout

Lifetime Customer Support

Unlimited lifetime support, always available.

Request a Free Quote

Got Questions? We’re Here to Help!

Our support team is ready to assist you with product guidance, order details, or any questions you might have.

(888) 876-0007

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Briggs and Stratton 400 amp Transfer Switch, 240V, NEMA 3R - 071139 $10,285.00

What is your return policy?

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.

What’s covered by your return policy?

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.

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?

Our legendary lifetime customer support has helped make us the #1 online solar retailer! We have a dedicated team of solar professionals standing by to help you navigate the world of solar with ease. From selecting the perfect solar kit to installation and beyond, we provide support and expertise at every step of the journey.If you need help with ordering, shipping, troubleshooting, expanding your system, warranty issues, or anything else you have questions about for as long as you own your Portlandia Electric Supply equipment, we’ve got you covered: we’re always only a phone call or email away.

Briggs and Stratton 400 Amp Transfer Switch - 071139

The Briggs and Stratton 400 amp Transfer Switch, 240V, NEMA 3R - 071139 is engineered for tough power management tasks. It seamlessly switches between utility power and backup generators for homes, commercial buildings, and industrial sites. Built for durability and reliable operation, this switch helps keep your electrical systems running during outages or voltage fluctuations. Its sturdy design and advanced controls protect your equipment and simplify switching.

The Briggs and Stratton 400 Amp Transfer Switch (071139) suits medium to large commercial and light industrial environments needing reliable power transfer. Rated at 240V, it ensures critical systems stay powered during interruptions. The NEMA 3R enclosure supports outdoor use by guarding against rain and dust, ideal for harsh conditions.

Key Features

400 Amp capacity designed for commercial and industrial power demands
240V operation ensures efficient single-phase power distribution
NEMA 3R enclosure rated for outdoor protection from weather and dust
Automatic transfer ensures power continuity during power failures
UL listed and NEC compliant for safe, reliable operation
Built for long-lasting performance in demanding environments

Specifications

MPN	071139
Vendor	Briggs & Stratton
Amperage	400 Amps
Voltage	240V
Phase Type	Single-Phase
Enclosure Rating	NEMA 3R
Compatibility	Commercial & Industrial Applications

Installation & Application

This switch is perfect for medium to large commercial and industrial applications needing dependable backup power. It automatically transfers power between utility and backup generators during outages. The NEMA 3R-rated enclosure ensures safe outdoor installation, protecting from rain and dust. Ideal for warehouses, commercial properties, and industrial plants requiring consistent power backup.

Warranty & Compliance

Complies with UL and NEC safety standards
Covered by Briggs & Stratton’s warranty for peace of mind

Why Choose the Briggs and Stratton 400 Amp Transfer Switch - 071139?

When choosing a transfer switch for large-scale power systems, durability is key. This model delivers instant and automatic load transfers. It is designed to handle heavy electrical demands with precision and ensure safety over time.

1. Heavy-Duty 400 Amp Capacity

With a 400-amp rating, this switch meets significant electrical needs. It suits large residences with complex circuits, commercial properties, workshops, and farms. It powers essential and secondary loads without risk of overload.

2. Automatic and Seamless Power Transfer

This switch senses power loss instantly and transfers to backup power within seconds. It supports systems like HVAC units, refrigeration, lighting, machinery, and sensitive electronics. When utility power returns, it switches back automatically without intervention.

3. Built for Outdoor Use – NEMA 3R Enclosure

The Briggs and Stratton 400 Amp Transfer Switch - 071139 has a weatherproof enclosure. It protects internal parts from rain, dust, ice, and debris. Suitable for indoor or outdoor use, even in extreme conditions.

4. Reliable 240V Operation

Operating at 240 volts, it fits various generator and electrical system types. This voltage allows efficient power distribution across large properties with heavy electrical needs.

Key Features and Benefits of Briggs and Stratton 400 Amp Transfer Switch - 071139

Advanced Safety Protection

Safety is critical for high-capacity switches. This model includes overload protection, secure wiring terminals, and quality components. These features reduce hazards and stabilize power flow.

Durable and Long-Lasting Construction

Its robust metal housing resists corrosion. High-quality internal parts ensure long-term durability. This switch performs reliably through many power switches.

Smooth System Integration

This transfer switch easily integrates with standard electrical setups. Clear labels and accessible wiring simplify installation for professionals. It fits upgrades or new installations alike.

Ensures Business Continuity

Business operations rely on continuous power. This switch supports servers, POS systems, refrigeration, and security. It helps avoid revenue loss caused by power interruptions.

Residential Reliability

Homeowners benefit from consistent power for lighting, climate control, and essential devices. It maintains daily routines uninterrupted during outages.

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?

Briggs and Stratton 400 Amp Transfer Switch - 071139

Key Features

400 Amp capacity designed for commercial and industrial power demands
240V operation ensures efficient single-phase power distribution
NEMA 3R enclosure rated for outdoor protection from weather and dust
Automatic transfer ensures power continuity during power failures
UL listed and NEC compliant for safe, reliable operation
Built for long-lasting performance in demanding environments

Specifications

MPN	071139
Vendor	Briggs & Stratton
Amperage	400 Amps
Voltage	240V
Phase Type	Single-Phase
Enclosure Rating	NEMA 3R
Compatibility	Commercial & Industrial Applications

Installation & Application

Warranty & Compliance

Complies with UL and NEC safety standards
Covered by Briggs & Stratton’s warranty for peace of mind

Why Choose the Briggs and Stratton 400 Amp Transfer Switch - 071139?

1. Heavy-Duty 400 Amp Capacity

2. Automatic and Seamless Power Transfer

3. Built for Outdoor Use – NEMA 3R Enclosure

4. Reliable 240V Operation

Operating at 240 volts, it fits various generator and electrical system types. This voltage allows efficient power distribution across large properties with heavy electrical needs.

Key Features and Benefits of Briggs and Stratton 400 Amp Transfer Switch - 071139

Advanced Safety Protection

Safety is critical for high-capacity switches. This model includes overload protection, secure wiring terminals, and quality components. These features reduce hazards and stabilize power flow.

Durable and Long-Lasting Construction

Its robust metal housing resists corrosion. High-quality internal parts ensure long-term durability. This switch performs reliably through many power switches.

Smooth System Integration

This transfer switch easily integrates with standard electrical setups. Clear labels and accessible wiring simplify installation for professionals. It fits upgrades or new installations alike.

Ensures Business Continuity

Business operations rely on continuous power. This switch supports servers, POS systems, refrigeration, and security. It helps avoid revenue loss caused by power interruptions.

Residential Reliability

Homeowners benefit from consistent power for lighting, climate control, and essential devices. It maintains daily routines uninterrupted during outages.

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