ARMSTRONG Pump Motor: Mfr Part # 818041-400, Single Phase, 115V AC, 1/2 hp
The ARMSTRONG Pump Motor (Mfr Part # 818041-400) is an OEM motor for circulator pumps, compatible with the S&H 5-Series. It is a single-phase motor with a nameplate voltage of 115V AC and a motor frame designation of…
SKU 3G-OTH-83588
Need installation or engineering help?
Ask a question
Product Description
The ARMSTRONG Pump Motor (Mfr Part # 818041-400) is an OEM motor for circulator pumps, compatible with the S&H 5-Series. It is a single-phase motor with a nameplate voltage of 115V AC and a motor frame designation of 48Z.
Frequently Asked Questions
What is the ARMSTRONG 818041-400 pump motor used for?
The ARMSTRONG 818041-400 is an OEM replacement motor for circulator pumps, specifically compatible with the S&H 5-Series. It is designed for HVAC and hydronic heating systems where reliable water circulation is required. This single-phase motor ensures proper pump operation in residential and light commercial applications.
What are the specifications of the ARMSTRONG 818041-400 motor?
The ARMSTRONG 818041-400 is a single-phase motor with a nameplate voltage of 115V AC and 1/2 hp. It features a 48Z frame designation and is compatible with the S&H 5-Series circulator pumps. The manufacturer part number is 818041-400. These specs ensure correct fit and performance for the intended pump system.
Where to buy ARMSTRONG 818041-400 motor worldwide?
3G Electric supplies the ARMSTRONG 818041-400 motor worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us to source this OEM motor for your S&H 5-Series circulator pump. We provide reliable sourcing and shipping to any country.
How to install the ARMSTRONG 818041-400 motor on a circulator pump?
To install the ARMSTRONG 818041-400 motor, first disconnect power and drain the system. Remove the old motor by unbolting it from the pump housing. Align the new 48Z frame motor with the mounting bracket, reconnect wiring per the 115V AC single-phase diagram, and secure bolts. Always follow the pump manufacturer's manual and local electrical codes.
Used in
Common applications for ARMSTRONGARMSTRONG Products
3G Electric supplies ARMSTRONG oem motors for circulator pumps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.













