B72240B251K1 EPCOS Inc, B72240B251K1 Datasheet - Page 12

• Manufacturer Part Number: B72240B251K1
• Description: Varistors 250V RMS 40MM Varistor B40K250
• Manufacturer: EPCOS Inc
• Type: MOVr

Specifications of B72240B251K1

• Voltage Rating Dc: 320 V
• Voltage Rating Ac: 250 V
• Clamping Voltage: 650 V
• Peak Surge Current: 40 KA
• Capacitance: 2900 pF
• Operating Temperature Range: - 40 C to + 85 C
• Mounting: Screw
• Tolerance: 10 %
• Brand/series: E Series
• Current, Peak: 40000 A
• Current, Surge: 40000 A
• Dimensions: 60 mm W x 55 mm H x 14 mm T
• Electric Strength: ≥2.5 kV (RMS) (Min.)
• Energy Rating: 490 Joules
• Mounting Style: Leaded
• Package: Screw
• Power Rating: 1.4 W
• Resistance, Insulation: ≥10 Megohms (Min.)
• Technology: Metal Oxide
• Temperature, Operating, Maximum: 85 °C
• Temperature, Operating, Minimum: -40 °C
• Terminal Type: Screw
• Voltage, Ac: 250 VAC
• Voltage, Clamping: 650 V
• Voltage, Dc: 320 VDC
• Voltage, Operating: 250 Vrms⁄320 VDC
• Voltage, Varistor: 390
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: B72240B0251K001

v/i characteristics
v = f (i) – for explanation of the characteristics refer
SIOV-B80K130 … K1100
Please read Cautions and warnings and
Important notes at the end of this document.
v
10000
8000
7000
6000
5000
4000
3000
2000
1000
900
800
700
600
500
400
300
200
100
V
10
750
550
320
250
150
_
to “General technical information”, 1.6.3
5
420
10
A
1100
680
130
Block varistors
HighE series
460
385
440
275
230
_
4
10
_
3
10
1100
680
460
385
275
230
130
_
2
10
440
_
1
10
750
550
420
320
250
150
0
12
10
B
1
11/07
A = Leakage current
B = Protection level
10
2
10
3
10
VAR0531-Z
i
4
A
10
for worst-case
varistor tolerances
5