Table of Contents
What is the difference between power contactor and auxiliary contactor?
Power contactor is usually used as the main contactor. It handles loads of about 600 A . On the hand, Auxiliary contactors are designed for switching currents of only up to 6 A.
What is contact multiplication relay?
Contactor Multiplier relay: Contact multiplier relay use or increase the number of contact from any circuits. It just converts single contact into N number of contacts. These relays are mainly used in circuit breaker’s circuit.
What is an auxiliary relay?
What is Auxiliary Relay? Auxiliary Relays are designed to switch more load than the capacitance of the switching products. These components are used for the multiplication of contacts where more than one contact is required.
What is the difference between contactors and relays?
A contactor joins 2 poles together, without a common circuit between them, while a relay has a common contact that connects to a neutral position. Additionally, contactors are commonly rated for up to 1000V, while relays are usually rated to only 250V.
How many auxiliary contacts are in a relay?
Generally, in a contactor both NO(Normally Open) and NC(Normally Closed) contacts available. In the above diagram, you can see there is a total of four auxiliary contacts available – two NO contacts, two NC contacts. Auxiliary contacts are mainly designed to work with low voltage and low current.
What is the difference between load contacts and auxiliary contacts?
Auxiliary contacts are small and are intended to be used as part of the control circuit. Load contacts are large and designed to control a large amount of current. This prevents electrical noise from being transmitted to the control side of the circuit.
What is CMR relay?
Current Monitoring Series CMR – Current Control Protection against Overload, Phase Loss, Phase Reverse and Phase Unbalance faults. A wide range of sensing current: 1A – 45A. Models for 1 Phase and 3 Phase systems. Auto / Manual Reset selection. Fail-safe protection.
How does anti pumping relay work?
The anti-pumping relay is a device in circuit-breaker whose function is to prevent multiple breaker closures. For instance, if the operator gives the closing command to the breaker by pressing the close button and the breaker closes. However, a fault in the system causes the breaker to trip.
What is a MHO relay?
A mho Relay is a high-speed relay and is also known as the admittance relay. In this relay operating torque is obtained by the volt-amperes element and the controlling element is developed due to the voltage element. It means a mho relay is a voltage controlled directional relay.