Failing to use protection system, not only can seriously harm the equipment, but can also invalidate every right to assistance under warranty.
Single phase:
Protection percentage of built-in thermal control protector for single-phase electric-motor 110V/220 V
| Power - KW | 110V – 50/60 Hz | 220V 50/60 Hz |
|---|---|---|
| 0.25 | 60% | 70% |
| 0.37 | 50% | 60% |
| 0.75 | 30% | 50% |
| 1.1 | 25% | 40% |
| 1.5 | 15% | 30% |
| 2.2 | 5% | 15% |
Advantages This System:
Disadvantages this System :
This overload controls the system by measuring the temperature, so when your Pump find the problem, the temperature of the winding rises as the amperage consumption increases, and this overload cuts off the electricity by measuring the temperature, but after cooling and lowering the degree, automatically connects the electricity and pump will be turn on auto.
Very important point:
Given that, the number of disconnection and connection times and the lifespan of each type of overload is determined by the manufacturer according to the Amper passing through it. And if your pump is stuck for any reason and can’t work, a lot of Ampers will pass through it. Especially in high power, for example, 1.5 HP or 2 HP at 110 V will be passing 30 to 40 Ampers, Too much amperage can cause severe sparks, and platinum may be welded together .If there is no other reliable protection system in the input power line, your pump will certainly burn out. For example, the life of a good overload in 6 A is about 10,000 times, but in 15 A it is 200 times and in 30 amps it is only 10 to 20 times.
Three phases Overload System:
Some of the three-phase electric-pumps are equipped with thermal protection systems (Thermo guards) placed inside an external control panel on the circuit line.
This protection system for all pumps with different powers can provide up to 75% complete protection.
The manufacture use two kind of thermal protector for three phases , 1- Thermo Guard (on-off Contact ) 2- PTC (resistance system ) 3- PT100 sencore
1- Thermo Guard (on-off Contact ) ; this system need one controller that can be adjust with with this protection such as swes 0000
2- PTC (resistance system ): this system need one controller that can be adjust with PTC sencore
Free Shipping
Vertical Inline HVAC Pumps: Reliable Circulation for Commercial and Residential Applications, If you’re designing, maintaining, or upgrading an HVAC system, a vertical inline pump is one of the most efficient and space-saving solutions available. With free shipping across the United States and unmatched customer service, Pump Supermarket is your go-to source for circulation and HVAC pumps.
Discover Zoeller pumps in stock and ready to ship from Miami. We carry sprinkler, sewage, drainage, and grinder pumps in 110V, 230V, and 460V single or three-phase models.
Discover our wide range of drainage pumps for clear water, salt water, and construction sites. Available in stainless steel, cast iron, and multiple voltages, Pump Supermarket has the right pump for every application
Looking for the right deep well submersible pump, This guide explains how to size your pump, calculate flow and head, compare materials, and choose the best model for your home, farm, or commercial project. Learn expert tips to avoid costly mistakes and get reliable water supply for years to come.
© 2025 Pump Supermarket. All Rights Reserved.
