01
Use Purpose
1
Key Technical Parameters
2
NJBK6-36 motor protector (hereinafter referred to as the protector) is
applicable to the protection of overload, loss of phase, three-phase current
unbalance and blocking of none-stop or intermittent duty AC motors with
AC frequency 50Hz, rated insulation voltage below 690V and rated
operating current 1A~36A.
Table 1 Ambient Conditions
Normal use
conditions
Atmospheric
conditions
Installation category
Transport and
storage conditions
Ambient temp.: -5℃~+40℃; average value within 24h
not exc35℃; altitude not exceeding 2000m.
RH shall not exceed 50% when maximum temperature is
+40℃; in case of lower temperature, higher RH is allowed.
Measures should be taken against occasional condensation
due to temperature change.
Ⅲ
-
25℃~+55℃
Table 2 Product Specifications and Main Technical Parameters
Model
Setting current (A)
Current setting range (A)
Motor power (kW)
NJBK6-36/3 NJBK6-36/9 NJBK6-36/24 NJBK6-36/36
3
1~3
0.5~1.5
9
3~9
1.5~4.5
24
8~24
4~12
36
12~36
6~18
Plug installation (supported by a contactor of specified model)
Knob
Indicator (green light is on in normal operation;
red light is on in phase loss; red light is on in overload)
Installation method
Setting method
Display method
Protection of overload, loss of phase,
three-phase current unbalance and blocking
1 group of change-over
Protection function
Number of contacts
