Jabsco NEMP 40/4 Magnetic Drive Centrifugal Pump, 110V AC, 1/2 in NPT, 11 GPM

Overview

The Jabsco 436977 is a magnetic drive centrifugal pump for 110V AC 60Hz systems that need steady, continuous circulation on board. It uses 1/2 inch NPT ports and moves around 11 GPM, with shutoff head up to about 18 feet, which suits closed-loop and recirculation jobs where a compact AC pump is a better fit than a 12V or 24V unit.

The magnetic coupling keeps the wet end separated from the motor side, which helps where a conventional seal leak would be a concern. The pump head is entirely non-metallic and built around chemical-resistant thermoplastics, with a PP encapsulated magnet, PPS spindle housing, alumina ceramic spindle, and EPDM O-ring.

On a boat, this pump fits jobs such as marine air conditioning circulation, ice makers, hot water recirculation, livewell systems, and bait tank plumbing. It is intended for clean fluids and continuous operation, not for dry running or pulling water up from an empty line.

Key features

• 110V AC 60Hz pump for boats with shore power, inverter support, or generator-fed AC circuits
• Magnetic drive layout for leak-free circulation without a conventional shaft seal at the wet end
• Around 11 GPM open flow with shutoff head up to about 18 feet
• 1/2 inch NPT threaded ports for straightforward integration with common marine plumbing adapters
• IPX5 motor housing with thermal protection and fan cooling for machinery spaces and utility compartments
• Non-metallic pump head with chemical-resistant thermoplastics, PP housing, PPS spindle housing, alumina ceramic spindle, and EPDM O-ring
• UL-listed version with deep groove ball bearings for continuous-duty service

Compatibility and fit

This pump is a good match for boats that already have a 110V AC supply and need circulation rather than high suction lift. Overall size is about 8.4 inches long, 4.0 inches wide, and 5.6 inches high, with weight around 2.7 kg, so it fits well in dedicated pump spaces near an A/C loop, water heater circuit, or livewell plumbing run.

The 1/2 inch NPT ports matter when you are replacing an older circulation pump or tying into an existing threaded manifold. Before ordering, check that your system voltage is 110V AC 60Hz, the plumbing connection is set up for 1/2 inch NPT, and the application calls for clean circulating fluid rather than a self-priming transfer pump.

Installation and setup

Mount the unit in a dry, ventilated location. It is not self-priming and it should not be run dry, so the inlet should be fed from a flooded source or placed so the pump stays primed during normal use. If the pump is mounted vertically, the motor should sit below the pump head.

This model makes sense for owners replacing a compact AC circulation pump in a marine HVAC, hot water, or livewell setup and who want a non-metallic wet end for corrosion-sensitive duty. It is less suited to dirty water service, raw water with debris, or systems that depend on strong suction lift from an empty line.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Orders of $100 or more qualify for free shipping when eligible. For orders under $100, shipping costs are calculated at checkout based on destination, package weight, and selected service. International shipping is available for eligible products, and certain items may require additional handling, warehouse transfers, or may ship directly from the manufacturer, which can affect processing time.

Deliveries are handled by preferred carriers such as USPS, UPS, FedEx, DHL, and others depending on your location and selected service. Estimated delivery times are displayed at checkout and may vary due to customs processing, carrier delays, weather, postal disruptions, or other circumstances beyond our control. Once your order ships, you'll receive a confirmation email with tracking information. Tracking may take up to 24 hours to update on the carrier's website and is also available through your account when applicable.

We ship throughout the United States and to most international destinations for products eligible for international shipping. International orders may be subject to customs duties, taxes, brokerage charges, or other import fees, which are the customer's responsibility and are not included in the product or shipping price. PO Boxes are accepted only when shipping through USPS, and not all packages qualify for this option. If your order does not arrive within the estimated delivery window, please contact us at info@apollolighting.com or +1 (954) 375-0100 so we can assist with locating your package.

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Returns may be requested within 30 days of receiving your order. Items must be unused, uninstalled, unaltered, and returned in their original packaging with all tags, packing materials, blank warranty cards, manuals, instructions, accessories, and included items. Certain products, including installed or used electronics, electrical components, lighting, consumables, custom or special-order items, cut-to-length products, safety equipment, and merchandise exposed to water or marine conditions, may not be eligible for return.

To request a return, sign in to your account and select the applicable order and items, and submit your request for review. Eligible unfulfilled items may also be submitted for cancellation within 1 hour of placing the order. Returns or cancellations are not considered approved until you receive confirmation from Apollo Lighting. Please do not ship or drop off merchandise before receiving return approval and instructions.

Customers are responsible for arranging and paying for return shipping unless the return is due to an error by Apollo Lighting or the item is verified as defective, damaged, or incorrect. Missing, damaged, defective, or incorrect items must be reported within 2 business days of delivery, and photos or other documentation may be required for review. If the issue is verified, Apollo Lighting may provide or reimburse return shipping and issue a replacement or refund depending on the circumstances. International customers are responsible for return shipping, duties, taxes, customs charges, brokerage fees, and other costs associated with an international return.

After your return is received and inspected, approved refunds are issued to the original payment method and may take 5-7 business days to appear after processing. Original shipping and handling charges are nonrefundable, and the value of any included free items that are not returned may be deducted from the refund. Apollo Lighting does not charge a standard restocking fee on eligible returns. Returns that are incomplete, damaged, installed, used, altered, improperly packaged, or otherwise do not meet the eligibility requirements may be refused. We recommend using a trackable and appropriately insured shipping service for all customer-arranged returns.

For assistance, contact info@apollolighting.com or call +1 (954) 375-0100.

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Many products sold by Apollo Lighting include a manufacturer's warranty covering defects in materials or workmanship. Warranty terms vary by brand, product category, and model, so eligibility, coverage duration, exclusions, and available remedies are determined by the applicable manufacturer. We recommend reviewing the warranty information provided with your product before installation or use, especially for marine electronics, navigation equipment, lighting, electrical systems, pumps, safety equipment, and other specialized marine products.

If you need warranty service, the claim must follow the process established by the manufacturer, authorized service center, or designated warranty provider. You may be asked for proof of purchase, a serial number, product registration, photos, maintenance or installation records, or other documentation. Apollo Lighting does not determine or modify a manufacturer's warranty coverage or final claim decision, but we are happy to help provide purchase information and direct you to the appropriate manufacturer or warranty resource.

Keep your receipt, product documentation, serial number information, and original packaging when practical. Damage caused by normal wear, misuse, improper installation, insufficient maintenance, corrosion, impact, unauthorized modifications, electrical issues, or operation outside the manufacturer's specifications may not be covered. Warranty claims are separate from standard returns, so a product that has been installed, used, or exposed to marine conditions may no longer qualify for return while still remaining eligible for evaluation under the manufacturer's applicable warranty.

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