NR77AB0 Datasheet, PDF (2/5 Pages) Bourns Electronic Solutions – Breaker (Thermal Cutoff Device)

NR Series Breaker (Thermal Cutoff Device)
Typical Performance
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
20
Current vs. Temperature Curves
A-Type
NR72AB0ɹ(Low 67 °C average
NR77AB0ɹ(Low 72 °C average
NR82AB0ɹ(Low 77 °C average
NR85AB0ɹ(Low 80 °C average
30
40
50
60
70
80
Temperature (°C)
10
9
8
7
6
5
4
3
2
1
0
20
Current vs. Temperature Curves
C-Type
NR72CB0ɹ(Low 67 °C average
NR77CB0ɹ(Low 72 °C average
NR82CB0ɹ(Low 77 °C average
NR85CB0ɹ(Low 80 °C average
30
40
50
60
70
80
Ambient Temperature (°C)
The above curves were derived from placing test samples in an oven at 25 ℃, 40 ℃, 60 ℃ and 70℃, increasing current flow through the
sample at a rate of 0.1 A/minute and recording the current value when the sample trips.
Operation
NORMAL CIRCUIT
CIRCUIT
AFTER OPENING
EXCESSIVE
CURRENT
AND/OR
HEAT
CURRENT
VERY LOW CURRENT
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.