B40K320 EPCOS Inc, B40K320 Datasheet - Page 10

• Manufacturer Part Number: B40K320
• Description: VARISTOR BLOCK 320VRMS 40MM
• Manufacturer: EPCOS Inc
• Series: HighEr

Specifications of B40K320

• Varistor Voltage: 510V
• Current-surge: 40kA
• Number Of Circuits: 1
• Maximum Ac Volts: 320VAC
• Maximum Dc Volts: 560VDC
• Energy: 640J
• Package / Case: Chassis Mount
• Technology: Metal Oxide
• Capacitance Value: 2300pF
• Clamping Current: 300A
• Clamping Voltage: 840V
• Lead Style: Screw
• Ac Voltage Rating (max): 320VAC
• Dc Voltage Rating (max): 420VDC
• Operating Temp Range: -40C to 85C
• Mounting: Bolt-Down
• Surge Current (max): 40000A
• Lead Spacing: 24mm
• Product Length (mm): 60mm
• Product Depth (mm): 14mm
• Product Height (mm): 55mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: B72240B 321K 1; B72240B0321K001; B72240B321K1

v/i characteristics
v = f (i) – for explanation of the characteristics refer
SIOV-B40K75 … K750
Please read Cautions and warnings and
Important notes at the end of this document.
v
20000
10000
8000
6000
4000
2000
1000
800
600
400
200
100
80
60
40
20
10
V
10
750
550
320
150
130
-5
420
250
75
to “General technical information”, 1.6.3
440
10
A
-4
680
385
140
460
275
230
Block varistors
HighE series
10
-3
10
750
550
420
320
250
150
130
-2
75
10
680
460
385
275
230
140
-1
10
440
0
10
10
B
1
11/07
A = Leakage current
B = Protection level
10
2
10
3
10
VAR0233-X
4
i
A
10
5
for worst-case
varistor tolerances