00 Motor Contactors
Last Updated: April 1, 2025
Description
00 Motor Contactors are devices used to control the power flow to electric motors. They function as a switch that can be operated electrically to start or stop the motor. These contactors are integral components in motor starters, which are designed to ensure that motors operate efficiently and safely by managing the electrical current supplied to them.
Working Principle
Motor contactors operate by using an electromagnetic coil to create a magnetic field that pulls a set of contacts together, allowing electricity to flow through the motor circuit. When the coil is energized, the magnetic field generated causes the contacts to close, completing the circuit and allowing current to pass through to the motor. This electromechanical operation is crucial for controlling the motor's operation, providing a reliable means to start and stop the motor as needed. The use of contactors is beneficial because they can handle high current loads and provide a safe method for controlling motors without the need for manual intervention.
Applications
Motor contactors are widely used in various industrial and commercial applications. They are essential in systems where motors are used to drive machinery, such as conveyor belts, pumps, and fans. Specific examples include their use in HVAC systems to control the operation of compressors and fans, in manufacturing plants to manage assembly line equipment, and in water treatment facilities to operate pumps and filtration systems.
Advantages over other Motor Contactors
One of the advantages of using 00 Motor Contactors is their ability to handle high current loads efficiently. They are designed to provide reliable operation in demanding environments, making them suitable for heavy-duty applications. Additionally, they offer enhanced safety features, such as overload protection, which helps prevent damage to motors and associated equipment.
Limitations
Despite their advantages, motor contactors have limitations. They may not be suitable for applications requiring precise speed control or those that involve frequent starting and stopping, as this can lead to increased wear and tear on the contacts. Additionally, motor contactors typically do not have short-circuit interruption capability, which means they must be used in conjunction with other protective devices to ensure system safety.
Considerations
When selecting motor contactors, several factors should be considered. Initial costs can vary depending on the size and specifications of the contactor, while operating expenses may include energy consumption and maintenance costs. Durability is an important consideration, as contactors must withstand the mechanical and electrical stresses of frequent operation. Accuracy in operation is crucial to ensure that motors start and stop as intended. Replacement and maintenance costs should also be factored in, as contactors may require periodic inspection and servicing to maintain optimal performance.
from Radwell International
CONTACTOR, 9 AMP, 600 VAC MAX, 3 PHASE, OPEN TOP WIRE CONTACTOR, 3 POWER POLES, NO OPTION, NEMA 00, COIL 110V AT 50 HZ / 120V AT 60 HZ, CONTACTOR, SIZE 00. FREE 2 YEAR RADWELL WARRANTY [See More]
- NEMA Size: 00
- AC Motor Phase: Three
- Standard Rating: NEMA
- Continuous Current: 9
from Allen-Bradley / Rockwell Automation
500, 500DC NEMA AC/DC Contactor, Motor Loads,Top Wiring ,SIZE 00,230-240V 60Hz,Open, 3 Power Poles , 9, 220/240V 50/60Hz , , Yes, [See More]
- NEMA Size: 00
- Continuous Current: 9
- Standard Rating: NEMA
- Number of Poles: 3
from Radwell International
DISCONTINUED BY MAUNFACTURER, COIL, 220/240 VAC, 50/60 HZ, SCREW CLAMP TERMINALS, FOR NEMA 00 CONTACTOR / STARTER+RELAY. FREE 2 YEAR RADWELL WARRANTY [See More]
- NEMA Size: 00
- Motor Voltage: 240
- Standard Rating: NEMA
from Allen-Bradley / Rockwell Automation
500, 500DC NEMA AC/DC Contactor, Motor Loads,Top Wiring ,SIZE 00,575-600V 60Hz,Open, 3 Power Poles , 9, 550/600V 50/60 Hz , , Yes, [See More]
- NEMA Size: 00
- Standard Rating: NEMA
from CARLO GAVAZZI Automation Components
General. Compact size with powerful performance. Approx. 2 ¼ cubic inches (55 cubic mm). One frame size for three current ratings. Up to 7.5HP motor rating. Up to 20A resistive rating. AC or DC control voltage. Four connection types (shown in the picture above). Standards. cUL, CE and RoHS... [See More]
- NEMA Size: 00
- Device Technology: Electro-mechanical
- Standard Rating: NEMA
- AC Motor Phase: Single (optional feature); Three
from Automation24, Inc.
The main contactor MC12B-30-11-K7-S-E - 1345000500 from LS ELECTRIC is offered for load switching up to 7.5 HP at AC-3/480 V. The Metasol main contactor MC12B-30-11-K7-S-E - 1345000500 from LS ELECTRIC operates on a control supply voltage of 120 V AC and features one normally open and one normally... [See More]
- NEMA Size: 00
- Motor Voltage: 690
- Standard Rating: NEMA
- Three Phase Power: 7.5
from CARLO GAVAZZI Automation Components
General. Four frame sizes. Motor ratings of each frame size: Up to 20, 30, 60 or 75HP. Resistive rating Up to 40, 60, 100, 160A. AC or DC coil voltage. Two connection types: Screw terminal connections are available on all frame sizes Lug terminals connections are available on 63 and 100 amp sizes. [See More]
- NEMA Size: 00; 0; 1; 2; 3
- Device Technology: Electro-mechanical
- Standard Rating: NEMA
- AC Motor Phase: Single (optional feature); Three
from Automation24, Inc.
The main contactor MC12B-30-11-BD-S-E - 1345100300 from LS ELECTRIC is offered for load switching up to 7.5 HP at AC-3/480 V. The Metasol main contactor MC12B-30-11-BD-S-E - 1345100300 from LS ELECTRIC operates on a control supply voltage of 24 V DC and features one normally open and one normally... [See More]
- NEMA Size: 00
- Motor Voltage: 690
- Standard Rating: NEMA
- Three Phase Power: 7.5