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EATON Arc Flash Relays

Eaton arc flash relays detect and interrupt electrical arcs in large industrial and commercial settings. They use sensors connected to the relay via a wired connection to detect both light & current ...Read More

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EATON EAFR-101BA
EATON EAFR-101B
StyleModelPrice
A
EAFR-101B		£3,765.48
A
EAFR-101S		£5,415.01
A
EAFR-110F		£14,129.10
A
EAFR-101DB		£4,007.23
A
EAFR-110PB		£12,951.67
A
EAFR-101D		£4,007.23
A
EAFR-102		£4,126.67
A
EAFR-101-B		£3,765.48
B
EAFR-101		£3,765.48
A
EAFR-102B		£4,126.67
A
EAFR-110FB		£14,129.10
A
EAFR-110PLV		£12,951.67
B
EAFR-110P		£12,951.67

Working Mechanism

  • These relays use light and current sensors to detect the light emitted and current flow during an arc flash.
  • Once the arc is detected, the relay sends a trip signal to the breaker, which opens the contacts and interrupts the current.

Frequently Asked Questions

What is an arc flash?

An arc flash is a sudden release of energy caused by an electric arc which can cause fire or explosion if not interrupted in time.

How to install point sensors?

  • Point sensors can be installed either on or through the compartment wall using two screws.
  • In this arrangement, the unit turns around and the sensor's point protrudes through a small hole cut in the wall.
  • This allows the body of the sensor and cabling to be located outside the compartment to be protected.
  • The screws are attached from the back side of the sensor to firmly fix the unit.
  • No external mounting plates are needed during the installation.

What is the difference between AFDD and AFR-type flash relays?

  • AFDD (arc flash detection device) is a type of relay that uses current and voltage sensors to detect an arc flash and send a signal to the breaker to trip.
  • AFR (arc flash relay) uses a combination of current, voltage and thermal sensors to detect an arc fault and interrupt the current by tripping the breaker closest to the arc flash.

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