Emerson 49P11-843 SureSwitch 40A 2-Pole 24V Electronic Contactor

SKU: 49P11-843

Weight	2 lbs
Dimensions	8 × 8 × 8 in

$91.88

In stock — available to order.

Sold individually. Each quantity ordered is one unit. Kits are one complete kit; products sold by length use the stated length unit.

Same-item volume pricing

Quantity	Unit price	Saving
1–4	$91.88	0%
5–9	$87.29	5%
10+	$82.69	10%

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Emerson 49P11-843 SureSwitch 40A 2-Pole 24V Electronic Contactor

Specifications & product details

Overview

The Emerson SureSwitch 49P11-843 is a microprocessor-controlled electronic compressor contactor designed to replace traditional mechanical HVAC contactors.

Unlike standard contactors, the SureSwitch eliminates contact chatter and greatly extends compressor protection through advanced internal logic.

🔧 Key Performance Features:

✔ 40 Amp rated, 2-Pole configuration

✔ 24V coil control

✔ Handles up to 200A LRA @ 240V

✔ Brownout protection

✔ Short cycle protection

✔ Zero chatter solid-state latching

✔ Tri-color LED diagnostic display

✔ Random start delay on power up

✔ Push-button compressor test & cycle count

🚀 Why HVAC Techs Prefer SureSwitch

Extends contactor life up to 5X longer than mechanical contactors
Eliminates welded contacts caused by insects or debris
No need for external time delay relays
Built-in brownout monitoring
Direct mechanical contactor footprint (4-hole mounting)

Ideal replacement for standard 2-pole 40A HVAC contactors in:

Residential AC systems
Heat pumps
Light commercial rooftop units

Perfect for preventive maintenance upgrades.

Product details

Part / SKU	49P11-843

Package includes

Emerson 49P11-843 SureSwitch 40A 2-Pole 24V Electronic Contactor

Included components and any stated pack quantity are as described in this listing. Optional accessories shown separately are sold separately unless expressly included above.

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