Page 46 - WENZHOU ZHUOCHAO ELECTRIC CO.,LTD.

Product model and meaning
SZ D 11 - □ / □ □ □ □ □
Auxiliary specification codes
Space 1: pole number: 1. one pole 2. two poles 3. three poles
4. four poles 5. five poles
Space 2: whether extra contact is attached: 0 denotes no
extra contact is attached. 1 denotes assistance of
side mounting is attached;
Space 3: whether neutral terminal is attached: 0 denotes no
neutral terminal is attached. 1 denotes neutral
terminal is attached.
Space 4: whether earthing terminal is attached: 0 denotes no
earthing terminal is attached. 1 denotes earthing
terminal is attached.
Space 5: Type of installation: 1. Hanging-lock-attached panel
installation 2. Panel installation 3. Hanging-lock
handle/door interlock base installation.
Space 6: Type of switch box: 0 denotes no switch box is
attached, and 1 denotes thermoplastic seal switch
box of protection level IP65 is attached.
Rated current: 25, 32, 40, 63, 80, 100
Design sequence number
Load break switch
Enterprise code

Operating conditions

1.Ambient air temperature does not exceed +40℃ , average temperature within 24 hours does not exceed +35℃ ;
2.Lower limit of ambient air temperature does not exceed -25℃ ;
3.The altitude of installation site does not exceed 2000m;
4.When maximum temperature is +40℃ , air relative humidity does not exceed 50%, higher relative humidity is allowed at a lower
temperature. For example, relative humidity reaches 90% in time of +20℃ . It’s required to adopt special measures on the dew
condensates that occasionally form due to temperature changes.

Classification Installation mode

1.Classify by use category: a. AC-23A b. AC-3 1.Installation attached with hanging-lock panel;
2.Classify by protective grade offered: a. not attached with switch 2.Panel installation;
box: IP2L0 b. attached with thermoplastic seal switch box IP65 3.Panel installation;
4.Installation attached with hanging-lock handle/door interlocking
base;
5.Single hole;
6. Type of switch box: 0 denotes no switch box is attached, and 1
denotes thermoplastic seal switch box of protection level IP65 is
attached.
Technical parameters

Model and specification SZD11-25(20) SZD11-32 SZD11-40 SZD11-63 SZD11-80 SZD11-100
Rated insulation voltage Ui V 660 660 660 660 660 660
Conventional heating current
25 20 32 40 63 80 100
Ith A
Rated operating voltage Ue V 220 380 220 380 220 380 220 380 220 380 220 380
AC-21A A/kW 20/- 20/- 32/- 32/- 40/- 40/- 63/- 63/- 80/- 80/- 100/- 100/-
AC-22A A/kW 20/- 20/- 32/- 32/- 40/- 40/- 63/- 63/- 80/- 80/- 100/- 100/-
AC-23A A/kW 15/4 15/7.5 22/5.5 22/11 30/7.5 30/15 43/11 43/22 57/18.5 57/30 70/22 70/37
AC-3 A/kW 11.7/3 11.7/5.5 15/4 15/7.5 22/7.5 22/11 36/11 36/18.5 43/15 43/22 57/18.5 57/30

Type of current: AC 50Hz
Main contact position number: two positions, ON or OFF
Rated working system: 8-hour working system/intermittent periodic working system, operating frequency is 30 times per hour.
Electrical durability: 10000 times in time of AC-23, 6000 times in time of AC-3, auxiliary contact is 2000 times.

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