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Product model and meaning Classification
HZ 12 - □ / □ □ 5.1 Classify by conventional heating
current, it includes 16A, 25A, and
Interlock length codes of hanging-lock (built-in lock) 40A;
interlock type switch (See Table 3) 6.1 Main use category AC-23A: start
Mode code (See Table 1) or shut AC motor load or other
Conventional heating current highly inductive load.
Design code 6.2 See Table 1 for main technical
Group code parameters;

Operating conditions
a)Upper limit and lower limit of ambient air temperature are +40℃ and -25℃ respectively. Average value within 24 hours does not exceed
+35℃ ;
b)The altitude of installation site does not exceed 2000m;
c)When maximum temperature is +40℃ , air relative humidity does not exceed 50%. Higher relative humidity is allowed at a lower
temperature. When monthly average temperature of the wettest month does not exceed +25℃ , monthly average maximum relative
humidity should not exceed 90%.
d)Pollution class and installation category are class 3 and category III respectively.
Technical parameters

Model and specification HZ12-16 HZ12-25 HZ12-40
Conventional heating current Ith A 16 25 40
Rated operating voltag Ue V 380 500 380 500 380 500
Rated operating current le 16 10 25 12 40 16
AC-3 A 11 15 30
AC-15 A 8 6 12 8 2 12
AC-23 A 11 15 30
AC-21 A 16 25 40

Detailed description of product type, name, purpose and model

1.Basic type switch is applicable to on-off operation of common Built-in lock combination switch (power cutout switch) model:
circuit. HZ12-16/05, HZ12-25/05, HZ12-40/05
Basic type combination switch(power cutout switch) model: HZ12- 6.Hanging-lock and interlock type switch can serve as power cutout
16/01, HZ12-25/01, HZ12-40/01 switch that has hanging-lock function and can be interlocked with
2.Emergent-stop basic type combination switch(power cutout electric cabinet door in machine tool.
switch) model: HZ12-16/02, HZ12-25/02, HZ12-40/2 Emergent stop hanging-lock and interlock combination switch
3. The external dimensions of power cutout switch 25A and 40A (power cutout switch) model: HZ12-16/08, HZ12-25/08, HZ12-40/08
are the same. Installation dimensions of 16A, 25A, and 40A are the Before opening electric cabinet door, make sure to switch off power
same. cutout switch to cut off power.
Incoming wire terminals of all types of power cutout switches have Interlock mechanism falls off when electric cabinet door is opened,
protective covers. and recovers when electric cabinet door is closed.
4.Hanging-lock switch can serve as power cutout switch requiring 7.Hanging-lock and interlock type switch can serve as power cutout
hanging lock in machine tool.Hanging-lock switch can serve as switch that has hanging-lock function and can be interlocked with
power cutout switch requiring hanging lock in machine tool. electric cabinet door in machine tool. Emergent stop hanging-
Emergent stop combination switch (power cutout switch) model: lock and interlock combination switch (power cutout switch)
HZ12-16/04, HZ12-25/04, HZ12-40/04 HZ12-16/04、HZ12-25/04、 model: HZ12-16/09, HZ12-25/09, HZ12-40/09 Before opening
HZ12-40/04 electric cabinet door, make sure to switch off power cutout switch
5.Built-in switch can serve as power cutout switch requiring lock to to cut off power. Interlock mechanism falls off when electric
be installed inside the switch in machine tool. On disconnected cabinet door is opened, and recovers when electric cabinet door
position (“0”), power cutout switch can be locked with its own is closed.
built-in lock.
External dimension and Installation dimension(mm)

1-6（ Thickness of
> HZ12- □ /01 型号规格 Lmax(mm)
0 mounting panel） 4-Φ4.5
HZ12- □ /02 1 Φ15 HZ12-16 86
HZ12-25 89
Φ70
□72 HZ12-40 89
Φ55
90 Lmax 40
P 46