B40K320 EPCOS Inc, B40K320 Datasheet - Page 15

• 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

Derating curves
Maximum surge current i
For explanation of the derating curves refer to “General technical information”, section 1.8.1
i
SIOV-B40K230 … K460
i
SIOV-B40K550 … K750
Please read Cautions and warnings and
Important notes at the end of this document.
max
max
10
10
10
10
10
10
10
10
10
10
10
10
A
A
5
5
5
5
5
5
5
5
5
4
3
2
0
5
4
3
2
0
1
1
10
10
1
1
max
5
5
= f (t
10
10
r
, pulse train)
2
2
10
10
10
10
10
10
10
10
10
10
1x
10
1x
10
2
3
4
5
6
2
3
4
5
6
15
5
5
11/07
10
10
3
3
Block varistors
HighE series
t
t
r
r
5
5
VAR0093-G
VAR0092-8
t
t
i
i
µs
r
µs
r
max
max
10
10
4
4