Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

MCDONNELL & MILLER Snap-Action Switch Assembly: 310488 Mfr Part # - Replacement HVACR Pumps, Valves & Tubing
MCDONNELLReplacement HVACR Pumps, Valves & Tubing

MCDONNELL & MILLER Snap-Action Switch Assembly: 310488 Mfr Part #

The MCDONNELL & MILLER Snap-Action Switch Assembly, model 310488, is a replacement component for HVACR pumps, valves, and tubing systems. This assembly is compatible with manufacturer part number 42S, ensuring…

SKU 3G-OTH-82204

Brand
MCDONNELL
Item
& MILLER Snap-Action Switch Assembly: 310488 Mfr Part #
Category
Replacement HVACR Pumps, Valves & Tubing
Available to Order
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.
Worldwide Shipping
Air & sea freight
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
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

MCDONNELL
Manufacturer Part Number
310488
Product Type
Snap-Action Switch Assembly
Compatible Manufacturer Part Number
42S

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

The MCDONNELL & MILLER Snap-Action Switch Assembly, model 310488, is a replacement component for HVACR pumps, valves, and tubing systems. This assembly is compatible with manufacturer part number 42S, ensuring straightforward integration into existing setups. It serves as a direct replacement part for maintaining system functionality.

Frequently Asked Questions

What is the MCDONNELL & MILLER 310488 snap-action switch assembly used for?

The MCDONNELL & MILLER 310488 snap-action switch assembly is a replacement component for HVACR pumps, valves, and tubing systems. It is compatible with part number 42S and serves as a direct replacement to maintain system functionality in commercial and industrial heating, ventilation, air conditioning, and refrigeration applications.

What are the specifications of the MCDONNELL & MILLER 310488 snap-action switch assembly?

The MCDONNELL & MILLER 310488 is a snap-action switch assembly with manufacturer part number 310488. It is compatible with manufacturer part number 42S. This product type is designed as a replacement component for HVACR pumps, valves, and tubing systems, ensuring straightforward integration into existing setups.

Where to buy the MCDONNELL & MILLER 310488 snap-action switch assembly worldwide?

3G Electric supplies the MCDONNELL & MILLER 310488 snap-action switch assembly worldwide. As a global industrial equipment distributor established in 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us to source this replacement component for your HVACR system.

How to install the MCDONNELL & MILLER 310488 snap-action switch assembly?

To install the MCDONNELL & MILLER 310488 snap-action switch assembly, first disconnect power to the system. Remove the existing switch assembly and verify compatibility with part number 42S. Mount the new assembly securely, reconnect wiring per the manufacturer's diagram, and test operation before restoring full system function.

Used in

Common applications for MCDONNELL
Steam boiler low-water cutoff — McDonnell & Miller 61 level control
Condensate receiver level monitoring — McDonnell & Miller RS-4-BR-1 4-level sensor
HVACR pump suction filtration — McDonnell & Miller 340700 strainer basket assembly
Flow switch head replacement — McDonnell & Miller 63-HD head mechanism
Boiler control circuit safety — McDonnell & Miller 7-BM electrical switch with manual reset
Field servicing of flow switches — McDonnell & Miller 310452 cartridge kit

MCDONNELL Products

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

You might also need

Pump Accessories Valves & Regulation Motors & Drives All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
MCDONNELL & MILLER Snap-Action Switch Assembly: 310462 Mfr Part #
MCDONNELL
MCDONNELL & MILLER Snap-Action Switch Assembly: 310462 Mfr Part #
MCDONNELL & MILLER Snap-Action Switch Assembly: 310464 Mfr Part #
MCDONNELL
MCDONNELL & MILLER Snap-Action Switch Assembly: 310464 Mfr Part #
MCDONNELL & MILLER Electrical Switch: 309100 Mfr Part #
MCDONNELL
MCDONNELL & MILLER Electrical Switch: 309100 Mfr Part #
MCDONNELL & MILLER Electrical Switch: 2 Mfr Part #
MCDONNELL
MCDONNELL & MILLER Electrical Switch: 2 Mfr Part #
MCDONNELL & MILLER Water Control, 150W, Snap Switch: 157S Mfr Part #
MCDONNELL
MCDONNELL & MILLER Water Control, 150W, Snap Switch: 157S Mfr Part #
MCDONNELL & MILLER Valve Assembly: 342500 Mfr Part #
MCDONNELL
MCDONNELL & MILLER Valve Assembly: 342500 Mfr Part #

More from MCDONNELL

View all MCDONNELL parts
MCDONNELL & MILLER Level Control: 63-M Mfr Part #
MCDONNELL
MCDONNELL & MILLER Level Control: 63-M Mfr Part #
MCDONNELL & MILLER Water Feeder: 51-S-HD Mfr Part #
MCDONNELL
MCDONNELL & MILLER Water Feeder: 51-S-HD Mfr Part #
MCDONNELL & MILLER Level Control Float Block: 64-B Mfr Part #
MCDONNELL
MCDONNELL & MILLER Level Control Float Block: 64-B Mfr Part #
MCDONNELL & MILLER Level Control Tapping: 63-B Mfr Part #
MCDONNELL
MCDONNELL & MILLER Level Control Tapping: 63-B Mfr Part #
MCDONNELL & MILLER Cartridge: 310453 Mfr Part #
MCDONNELL
MCDONNELL & MILLER Cartridge: 310453 Mfr Part #
MCDONNELL & MILLER Level Control: 157S-RBP-MD Mfr Part #
MCDONNELL
MCDONNELL & MILLER Level Control: 157S-RBP-MD Mfr Part #
MCDONNELL & MILLER Low Water Cut-Off, Pump Controller: 193 Mfr Part #
MCDONNELL
MCDONNELL & MILLER Low Water Cut-Off, Pump Controller: 193 Mfr Part #
MCDONNELL & MILLER Casting: 193-1 Mfr Part #
MCDONNELL
MCDONNELL & MILLER Casting: 193-1 Mfr Part #