Vertical Hollow Shaft WP1 Fire Pump

Built for vertical turbine fire pumps, WP1 fire pump motors deliver reliable water flow with minimal maintenance—ideal for critical fire protection and emergency service applications.

Built for Fire Pumps. Designed for Easy Maintenance.

ABB Vertical Hollow Shaft (WP1) Fire Pump motors are purpose-built for vertical turbine fire pump systems, providing reliable water flow for standpipe, sprinkler, hydrant and chemical suppression systems. Featuring a hollow shaft connection for simplified alignment and easier maintenance compared to standard vertical pump motors, the WP1 ensures dependable performance when reliability matters most.

Technical data

Designed with WP1 weather-protected enclosures and inverter-duty construction, these motors offer efficient cooling and enhanced protection in outdoor and harsh conditions, making them ideal for vertical pump systems in agricultural, municipal and industrial settings.

Up to 500Hp

Power range 15 – 500Hp (11 – 372kW).

Frame size 5008

NEMA frame 254TP to 5008P.

Machined for 175%

extra high thrust capacity on 360 frames and above.

Meets UL listed

fire pump motors installed per NFPA-20.

Insulation Class F

Class B rise at full load.

Paint RAL3002

Exterior red epoxy paint for visibility and standardization.

Explore the key features and benefits

ABB’s Vertical Hollow Shaft (VHS) fire pump motors are engineered for high performance, reliability and energy efficiency in demanding pumping applications.

Fit for purpose

Designed for vertical turbine fire pump duty, ensuring consistent, dependable operation when system reliability is paramount.

Drop-in design

Designed to replace standard NEMA frame vertical hollow shaft motors. Machined for 175% extra high thrust capacity on 360 frames and above.

Safety

Vertical lifting provisions for ease of installation.

Extended motor life

Designed for severe-duty environments with durable cast iron construction, Class F insulation and space heaters for harsh enviornments.

Inverter Duty

Suitable for inverter use per NEMA MG1 Part 31.4.4.2.

Energy Efficient

Meets NEMA Premium® efficiency requirements for US, Canada and Mexico regulations.

Reliable

Features UL listing, a non-reverse ratchet design to prevent motor and pump from spinning backward and extra-high thrust capacity for enhanced durability.

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