Industrial High Energy Terminal Varistors > HA Series
HA Varistor Series
Agency Approvals
AgencyAgency File Number
E320116
LR91788
RoHS
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
= 170J to 1050J
TM
• 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
Absolute Maximum Ratings
• For ratings of individual members of a series, see Device Ratings and Specifications chart
ContinuousHA SeriesUnits
Steady State Applied Voltage:
AC Voltage Range (V
DC Voltage Range (V
Transients:
Peak Pulse Current (ITM)
For 8/20μs Current Wave (See Figure 2)25,000 to 40,000A
Single Pulse Energy Range
For 2ms Current Squarewave (W
Operating Ambient Temperature Range (T
Storage Temperature Range (T
Temperature Coefficient (a
Hi–Pot Encapsulation (COATING Isolation Voltage Capability)
(Dielectric must withstand indicated DC voltage for one minute per MIL–STD 202, Method 301)
COATING Insulation Resistance1000MΩ
)-55 to +125ºC
STG
V
) of Clamping Voltage (VC) at Specified Test Current<0.01%/ºC
)110 to 750V
M(AC)RMS
)148 to 970V
M(DC)
)160 to 1050J
)-55 to +85ºC
A
TM
2500V
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.
Industrial High Energy Terminal Varistors > HA Series
Power Dissipation Ratings
Current , Energy and Power De–Rating Curve
100
90
80
70
60
50
40
30
PERCENT OF RATED VALUE
20
10
0
-55 50 60 70 80 90 100 110 120 130 140 150
Figure 1
AMBIENT TEMPERATURE
Should transients occur in rapid succession, the average power
dissipation required is simply the energy (watt-seconds) per
pulse times the number of pulses per second. The power
so developed must be within the specifications shown on
the Device Ratings and Specifications table for the specific
device. Furthermore, the operating values need to be derated
at high temperatures as shown in above. Because varistors
can only dissipate a relatively small amount of average power
they are, therefore, not suitable for repetitive applications that
involve substantial amounts for average power dissipation.
o
C
Peak Pulse Current Test Waveform
100
90
50
PERCENT OF PEAK VALUE
10
O
1
Figure 2
= Virtual Origin of Wave
0
1
T = Time from 10% to 90% of Peak
T1 = Rise Time = 1.25 x T
T2 = Decay Time
Example - For an 8/20 μs Current Waveform:
8μs = T1 = Rise Time
20μs = T2 = Decay Time
T
T
1
T
2
TIME
Maximum Clamping Voltage for 32mm Parts
V111HA32–V751HA32
10000
Maximum Clamping Voltage
HA32 Series
110 to 750V AC Rating
V321CA32
V351CA32
1000
Voltage (V)
V271CA32V251CA32 V201CA32V181CA32
100
0.0010.010.1110100100010000100000
V301CA32
V331CA32
Figure 3
TA = -55 C to 85C
Current (A)
V511CA32
V551CA32
V661HA32
V151CA32
V571CA32
V141CA32
V751CA32
V131CA32
V681CA32
V481CA32
C111CA32
V441CA32
V421CA32
V391CA32
Maximum Clamping Voltage for 40mm Parts
V111HA40–V751HA40
10000
Maximum Clamping Voltage
HA40 Series
110 to 750V AC Rating