Littelfuse HA Varistor Series - Manual

© 2013 Littelfuse, Inc. 161
Revised: May 8, 2013
Varistor Products
HA Varistor Series
Industrial High Energy Terminal Varistors > HA Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/ha.html for current information.
HI–ENERGY
MO
V’S
HA Series
HA Varistor Series
Description
HA Series transient surge suppressors are industrial high
energy Metal-Oxide Varistors (MOVs). They are designed
to provide secondary surge protection in the outdoor
and service entrance environment (distribution panels)
of buildings, and also in industrial applications for motor
controls and power supplies used in the oil-drilling, mining,
and transportation fields.
The design of the HA Series of MOVs provide rigid
terminals for screw mounting. Also available in a clipped
lead version for through hole board placement or to
accommodate soldered leads designation "HC."
See Ratings and Specifications Table for part number and
brand information.
Features
• RoHS compliant
and Lead–free
• Wide operating
voltage range
V
M(AC)RMS
110V to 750V
• Two disc sizes available
32mm and 40mm
• High energy absorption
capability
W
TM
= 170J to 1050J
• High peak pulse current
capability, ITM =
25,000A to 40,000A
• Rigid terminals for
secure mounting
• Available in trimmed
version for through
hole board mounting
– Designation "HC"
• No derating up to
85ºC ambient
Agency Approvals
Absolute Maximum Ratings
• For ratings of individual members of a series, see Device Ratings and Specifications chart
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This
is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational
sections of this specification is not implied.
Continuous HA Series Units
Steady State Applied Voltage:
AC Voltage Range (V
M(AC)RMS
) 110 to 750 V
DC Voltage Range (V
M(DC)
) 148 to 970 V
Transients:
Peak Pulse Current (I
TM
)
For 8/20μs Current Wave (See Figure 2) 25,000 to 40,000 A
Single Pulse Energy Range
For 2ms Current Squarewave (W
TM
) 160 to 1050 J
Operating Ambient Temperature Range (T
A
) -55 to +85 ºC
Storage Temperature Range (T
STG
) -55 to +125 ºC
Temperature Coefficient (a V ) of Clamping Voltage (V
C
) at Specified Test Current <0.01 %/ºC
Hi–Pot Encapsulation (COATING Isolation Voltage Capability)
(Dielectric must withstand indicated DC voltage for one minute per MIL–STD 202, Method 301)
2500 V
COATING Insulation Resistance 1000 MΩ
Agency Agency File Number
E320116
LR91788
RoHS