Protect your sensitive solar or wind
DIMENSIONS: 2-1/4" High, 2-1-4"
Current: 60,000A Surge
Joules: 2,000 per Pole
Operations: No Limit
Leak Current: None
Leads: 18" #12 AWG
If there is a surge so strong that something
must be damaged, we prefer that it'd be an arrestor rather than your
equipment. Since you should expect the arrestor might be damaged,
install it in a regular electrical enclosure to protect personnel
from accidental contact with live parts. Should the arrestor be
damaged, it will not damage other components in the box. If the
arrestor cannot be placed in an enclosure, consider using our vent
valve model. Its case will not rupture. A small vent on the bottom
of the case will open.
To protect a house, the arrestor should be
mounted on an outside switch or junction box, or in the breaker box.
The black wires should be connected to the circuit. The white wire
should be connected to the neutral, the box, and/or a solid ground.
To protect electronic equipment such as
computers, transmitters, receivers, etc., connect the black wires to
the terminals of the device and the white wire to chassis. Mount the
arrestor in the cabinet. Consider using a surge capacitor connected
to the breaker feeding them.
To protect a watt-hour meter, connect the black
wires to the line terminals, and the white wire to the meter box.
To protect a submersible pump motor, connect
the black wires to the line terminals and the white wire to the
casing and/or tubing.
To protect an electric motor on machinery,
connect the black wires to the motor leads and the white wire to the
To protect equipment on a radio tower or a
drilling rig, mount the arrestor to a junction box at the bottom of
each string of lights going up to the tower. Connect the black leads
to the circuit conductors and the white wire to the rig steel.
Arrange for the conductors feeding the junction box to be parallel
with the earth. Connect an arrestor to the generator leads grounding
the white wire to the generator frame. Connect an arrestor to each
lighting panel connecting black wires to the circuit conductors, and
the white wire to the box and rig frame.
Where the switch and motor are within six feet
of each other, one arrestor will protect both provided a solid
ground wire is fastened to the switch box, motor frame, and arrestor
white wire. However, optimum protection is afforded only when the
arrestor is connected directly to the device to be protected.
To protect a motor control switch separately,
connect the black wires to the line terminals and the white wire to
In all cases, it is the electrical insulation
that is to be protected. Once in the circuit, the high voltage
ruptures the insulation of the equipment in its effort to discharge
to ground. The arrestor provides a parallel path to ground for the
current discharge. Consequently, the black wires need to be
connected to the circuit, and the white wires need to be connected
to the metal frame of the machine or device to be protected. A mere
ground connection will not necessarily provide protection; however,
it should be used in addition to the frame connection.
Caution! Electrical work can
be dangerous and should only be attempted by persons experienced to
do so. Accidental contact with electrically charged parts can cause
injury or electrocution. Loose connections can cause over heating,
damage to equipment, and fire.
The arrestor remains good and functions
properly as long as its enclosure is intact. Should the arrestor
ever be damaged the enclosure will burst. While it is not possible
to achieve one hundred percent protection, the Delta Arrestor will
greatly reduce problems due to lightning and power surge. This
device is to be installed in accordance with all applicable
requirements of the National Electrical Code.
Warning! To reduce the risk of fire,
electric shock or personal injury, this secondary surge arrestor
shall be installed in conjunction with a disconnecting means which
shall consist of a manually operable Listed circuit breaker that has
an interrupting rating sufficient for the nominal circuit voltage
and the current that is available at the line terminals of the
secondary surge arrestor. Connect black wires to lines load-side of
fuse/breaker. Connect white wire to neutral/ground lines.
Delta Lightning Arrestors guarantees and
warrants to the end user that this arrestor is free from defects in
workmanship and material. The arrestor is designed to conduct 60,000
amps of lightning or surge to ground without damage. When lightning
or surge is in excess of 60,000 amps, the arrestor is expected to
experience damage. In the event the arrestor should damage due to
defects, return it to the factory with payment of five dollars to
cover shipping and handling and it will be replaced. This guarantee
is limited to replacement. There is no other warranty, expressed or
The Delta LA Series of lightning arrestors handles the big
surges, like lightning up to 50,000 amps, passing them harmlessly to