Send a part number, a photo, or a whole BOM — we supply it and stand behind it. EXW Singapore — collect from our office.

3G Electric
MCDONNELL 150S Pump Controller - Replacement HVACR Controls, Switches & Thermostats
MCDONNELLReplacement HVACR Controls, Switches & Thermostats

MCDONNELL 150S Pump Controller

MCDONNELL Replacement HVACR Controls, Switches & Thermostats. Specifications: Product Type: Pump Controller.

SKU 3G-OTH-81521

Also listed as: 150 S · 150-S

Brand
MCDONNELL
Item
150S Pump Controller
Part Number
150S
Category
Replacement HVACR Controls, Switches & Thermostats
Available to Order
Also known as:150SMCDONNELL
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
EXW Singapore
Collect or forward from our office
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.

Technical Specifications

MCDONNELL
Manufacturer Part Number
150S
Product Type
Pump Controller

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

MCDONNELL Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

MCDONNELL Replacement HVACR Controls, Switches & Thermostats. Specifications: Product Type: Pump Controller.

Frequently Asked Questions

What is the MCDONNELL & MILLER 150S pump controller used for?

The MCDONNELL & MILLER 150S pump controller is used in HVAC and boiler systems to automatically control pump operation based on system demand. It helps maintain proper water circulation and pressure in commercial and industrial heating applications.

What are the specifications of the MCDONNELL & MILLER 150S pump controller?

The MCDONNELL & MILLER 150S is a pump controller with manufacturer part number 150S. It is designed for use in HVACR systems as a replacement control. For detailed electrical ratings and installation requirements, consult the product datasheet or contact 3G Electric.

Where to buy the MCDONNELL & MILLER 150S pump controller worldwide?

You can source the MCDONNELL & MILLER 150S pump controller through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time.

How to install the MCDONNELL & MILLER 150S pump controller?

Installation of the MCDONNELL & MILLER 150S pump controller should follow the manufacturer's instructions and local electrical codes. Typically, mount the controller securely, connect power and pump wiring per the wiring diagram, and verify proper system operation. Always disconnect power before installation.

Used in

Common applications for MCDONNELL
Commercial boiler rooms — McDonnell & Miller low water cut-offs (e.g., Part 69) for steam and hot water boilers to prevent dry-fire.
Industrial steam systems — McDonnell & Miller water feeders (e.g., 51-S-HD) to maintain water level in low-pressure steam boilers.
HVAC hydronic heating — McDonnell & Miller level controls (e.g., 63-M) for monitoring liquid levels in expansion tanks and receivers.
Boiler maintenance and repair — McDonnell & Miller replacement head mechanisms (e.g., 94-HDLS) to restore function to existing controls.
Process equipment — McDonnell & Miller float blocks (e.g., 64-B) for on/off control of pumps and valves based on liquid level.
Steam boiler safety — McDonnell & Miller level control tappings (e.g., 63-B) to prevent low-water conditions in commercial and industrial systems.
Not sure this is the right part? Photo-identify it→

MCDONNELL Products

3G Electric supplies MCDONNELL replacement hvacr controls, switches & thermostats. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

More from MCDONNELL

View all MCDONNELL parts →

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first