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HOME > PRODUCT > MCCB
Product name:YDZ20Y Series Molded Case Circuit Breakers
Product brand:Zhejiang YADE Electric Co. Ltd.
Product area: HOUJIE Industrial Zone,Liushi town,Yueqing County,Wenzhou city,Zhejiang province
Customer service:13706780110(Sales Manager)
Online consultation:点击这里给威尼斯游戏网站发消息 威尼斯游戏网站电气

First, the scope

YDZ20Y Series Molded Case Circuit Breaker to do with shunt trip ( YDZ20Y MCCB ), applicable to the exchange 50Hz, rated insulation voltage 660V, rated working voltage 380V (400V) and the following circuit, the rated current from 16A to 1250A. Generally used as a distribution, in which Y, J, Q-type and rated current of 225A and below the frame for the shell type circuit breaker 400Y may be used as motor protection. Under normal circumstances, the circuit breaker can be used as infrequent line conversion and motor are not infrequent start.
Quadrupole YDZ20 MCCB is mainly used for AC 50Hz, rated voltage 400V and below, rated current of 16A to 630A three-phase four-wire system, which can ensure that users and the power is completely disconnected, To ensure safety, so as to solve any other insurmountable breaker neutral pole current is not zero defects.
YDZ20 molded case circuit breakers in the distribution network used to distribute power, and can be used as power lines and equipment overload, short circuit and under voltage protection.
Motor protection circuit breakers used in the distribution network squirrel cage motor starting and breaking as well as motor overload, short circuit and under voltage protection.
The series frame degree rated current of the transparent cover from the three-pole 100A-630A product but also with, customers can freely observe the internal operation of the product.
YDZ20 MCCB in line GB14048.2 standards. & Nbsp;

Second, model and specification


Type Meaning Note:
. a distribution no code breaker: motor protection circuit breaker with 2 represents;
. b handle direct operation No code: electric operation indicated by P; Z represents by turning the handle (Frame rating of 1250A product without turning the handle);
. c Press the rated ultimate short-circuit breaking capacity high and low points: C Cheap; Y general type; J higher type; G highest type;

Third, the accessory code

Attachment Name instantaneous release double release
without attachments 200 300
alarm contacts 208 308
shunt release 210 310
auxiliary contacts 220 320
undervoltage release 230 330
Shunt release Auxiliary contact 240 340
Shunt release Undervoltage release 250 350
two auxiliary contacts 260 360
auxiliary contact undervoltage release 270 370
Shunt release Alarm contact 218 318
Auxiliary contact Alarm contact 228 328
undervoltage release alarm contacts 238 338
Shunt release Auxiliary contact Alarm contact 248 348
shunt release undervoltage release alarm contacts 258 358
two auxiliary contact alarm contacts 268 368
undervoltage release Auxiliary contact Alarm contact 278 378

Fourth, the structural features

◆ YDZ20 molded case circuit breakers for the basic product is a Y-type, consisting of four part insulation shell, operating mechanism, contact system and tripping composition. The operating mechanism of the circuit breaker has the contacts and breaking the fast closing function, the "together", "minute", "re-label" and "free trip" position to the handle position to distinguish.
◆ C type, J and G YDZ20 breaker is in the Y-derived products based on the basic design is made (except C-160A outside). J-breaker is the Y-breaker contacts for structural improvements, so that in the case of short, before the agency action, moving quickly off the contact, to achieve the purpose of improving on-off capabilities.
Repulsion limiting the contact system ◆ G-breaker with a parallel conductor plate in Y-breaker after a series of composition, the system longer than the J-type contact repulsion, disconnect the distance is large, and therefore can more quickly limiting; in normal disconnect closed and in setting short-circuit trip protection action value range, by Y-type circuit breaker to complete. Once the large current or large short-circuit current in the network, the series of repulsion limiting contact quickly denounced by the electric power and open, while limiting the introduction of the arc. Denounced the contacts open process, release action, the operating mechanism of the circuit breaker so that Y-type contact breaking. Repulsion limiting the contact is due to the reduction or disappearance of current and return to the closed state.
◆ quadrupole YDZ20 MCCB neutral pole (N) is not installed tripping element, located in the right position. In the division process, the neutral pole is defined as representing a closed first contact with the other three poles, representing the other three poles disconnected after opening.
◆ C-type circuit breaker is designed to meet and below 630kVA transformer power distribution grid needs protection, through the selection of materials and simplify the structure of the economy and improvement of technology and other measures, to achieve better economic results.

Fifth, the main parameters and technical performance

1, basic parameters CM1L MCCB
Type Poles short circuit breaking capacity level short circuit breaking capacity KA (V) rated current ln (A)
lcu/cosφ lcu/cosφ
YDZ20C-160 3P C 12/0.30 - 16,20,25,32,40,50,63,80,100,125,160
YDZ20Y-100 3P Y 18/0.30 14/0.30 16,20,25,32,40,50,63,80,100
YDZ20J-100 3P, 4P J 35/0.25 18/0.30
YDZ20G-100 3P G 100/0.20 50/0.25
YDZ20C-225 3P C 15/0.30 - 100,125,160,180,200,225,250
YDZ20Y-225 3P Y 25/0.25 19/0.30 100,125,160,180,200,225
YDZ20J-225 3P, 4P J 42/0.25 25/0.25
YDZ20G-225 3P G 100/0.20 50/0.25
YDZ20C-400 3P C 20/0.30 - 100,125,160,180,200,250,315,350,400
YDZ20Y-400 3P Y 30/0.25 23/0.25 200,250,315,350,400
YDZ20J-400 3P, 4P J 42/0.25 25/0.25
YDZ20G-400 3P G 100/0.20 50/0.25
YDZ20Y-630 3P Y 30/0.25 23/0.25 400,500,630
YDZ20J-630 3P, 4P J 50/0.25 25/0.25
YDZ20Y-1250 3P Y 50/0.25 32.5/0.25 630,700,800,1000,1250
YDZ20J-1250 3P J 60/0.2 32.5/0.25 800,1000,1250

★ short-circuit protection circuit breaker current setting
Type power distribution motor protection
YDZ20 Y/J/G-100 10ln 12ln
YDZ20 Y/J/G-225 5ln and 10ln 12ln
YDZ20-400 10ln 12ln
YDZ20 J/G-400 5ln and 10ln -
YDZ20 Y/J-630 5ln and 10ln -
YDZ20 Y/J-1250 4ln and 7ln -
Note: 1, YDZ20C-160,250,400 breaker, instantaneous release is not adjustable, the current setting are 10In, but instantaneous motion In≤20A, as the current is 15In, non-operating current of 8In.
2, YDZ20Y.JG-100 circuit breakers, when In≤40A, instantaneous action current level action is 600A, non-operating current is 10In.

★ inverse power distribution circuit breaker disconnect feature
ID test current Title Tuning
Current multiple
agreed time initial state
In≤63 In & gt; 63
1 conventional non-tripping current 1.05In ≥1h ≥2h cold
2 Conventional tripping current 1.30In <1h <2h No. 1 test immediately after the start

★ motor protection circuit breaker disconnect inverse characteristic
ID test current Title Setting current multiples agreed time initial state
1 conventional non-tripping current 1.0In ≥2h cold
2 Conventional tripping current 1.2In & lt; 2h No. 1 test immediately after the start
Note: Hot refers to conventional non-tripping currents through a predetermined state agreed time.

◆ Shunt release:
◇ rated control supply voltage: AC220V, 380V, DC24V, 110V, 220V.
◇ when between 70 and 110% of rated control supply voltage, shunt trip circuit breaker tripping should be reliable.
◇ NOTE: When the selection voltage specifications DC24V, rated current should reach 5A ± 10%
◆ undervoltage release:
◇ rated working voltage: AC220V, 380V. When the voltage drops (or even slow decline) to 70% to 35% of rated voltage, under-voltage release shall operate at below 35% of rated voltage release, undervoltage release should be able to prevent disconnection is closed, the power supply voltage is equal to or greater than 85%, should be able to ensure that the circuit breaker off.
◆ alarm contacts:
◇ rated working voltage: AC220V, thermal current: 1A.
◆ auxiliary contacts: at different fashion undervoltage releases and shunt releases can be mounted auxiliary contacts. Auxiliary contacts rating (see table);
◇ making and breaking capacity (see table): The same auxiliary contact is not energized operating performance and the number of circuit breakers, power times the number of operations for the 6050, when the circuit breaker operating performance number is less than 6050 times, then the circuit breaker equal.

frame degree rated current Conventional thermal current (A) rated current (A)
AC380V DC220V
400A and above 6 3 0.2
250A and below 3 0.26 0.14

Use
Type
ON
I/Ie
ON
U/Ue
ON
cosφ
ON Breaking Breaking Breaking Breaking operating frequency
(Times/h)
energized
Time (s)
T0.95ms I/Ie U/Ue cosφ T0.95
AC-15 10 1 0.3
1 1 0.3
120 0.05-2
AC-13 1 1
6 × Pe 1 1
6 × Pe 120 0.05-2
Note: The table 250A and below Pe = 30W. 400A and above Pe = 45W. Pe = Ue · Ie the steady-state power loss.

External accessories
★ breaker ★ electric operation after the relevant parameters and installation of electric breaker operating mechanism total height H Table.
Type YDZ20Y, J-100 YDZ20G-100 YDZ20Y, J-225 YDZ20G-225 YDZ20Y-400 YDZ20J-400
YDZ20Y, J-630
YDZ20G-400 YDZ20Y, J-1250
height H 185 235 220 305 230 245 345 275
structure Solenoid Motor
voltage specifications AC50Hz, 220V, 380V
Note: The circuit breaker with motorized operating mechanism trip trip, the electric circuit breaker operating mechanism must be deducted before closing!

★ size table manually operated mechanism mounted.
Type YDZ20Y, J, G-100 YDZ20Y, J, G-225 YDZ20Y-400 YDZ20J, G-400
YDZ20Y, J-630
Installation dimensions H 55 85 105 80
center operating handle with respect to the circuit breaker X value 0 0 0 0

six, YDZ20 breaker structural features

YDZ20 MCCB is a Y-shaped basic products, from insulation shell, operating mechanism, contact system and the release of four components. The operating mechanism of the circuit breaker has the contacts and breaking the fast closing function, the "together", "minute", "re-label" and "free trip" position to the handle position to distinguish.
C-type, J-type and G-type circuit breaker is in the Y-derived products based on the basic design is made (except C-160A outside). J-breaker is the Y-breaker contacts for structural improvements, so that in the case of short, before the agency action, moving quickly off the contact, to achieve the purpose of improving on-off capabilities.
G-type circuit breaker is repulsion limiting the contact system of a parallel conductor plate Y-breaker after a series of composition, the system longer than the J-type contact repulsion, distance big disconnect, thus limiting more quickly stream; Under normal disconnect closed and the trip short circuit protection action setting value range, by Y-type circuit breaker to complete. Once the large current or large short-circuit current in the network, the series of repulsion limiting contact quickly denounced by the electric power and open, while limiting the introduction of the arc. Denounced the contacts open process, release action, the operating mechanism of the circuit breaker so that Y-type contact breaking. Repulsion limiting the contact is due to the reduction or disappearance of current and return to the closed state.
Four-pole circuit breaker neutral pole (N) is not installed tripping element, located in the right position. In the division process, the neutral pole is defined as representing a closed first contact with the other three poles, representing the other three poles disconnected after opening.
C Type YDZ20 breaker is designed to meet and below 630kVA transformer grid distribution protection needs, through the selection of materials and simplify the structure of the economy and improvement of technology and other measures, to achieve better economic results.

seven, YDZ20 Breaker shape and installation dimensions

Type Dimensions (mm)
Front connection
W L H W1 L1 L2 H1 H2 H3 W2 L4 L5 H6
3P 4P 3P 4P
YDZ20Y-100 105 - 165 86.5 70 - - 215 103 26.5 26.5 26 69 28.5 4
YDZ20J-100 (W) 105 140 165 86.5 70 105 - 215 103 26.5 26.5 26 69 28.5 4
YDZ20G-100 105 - 165 140 70 - - 218.5 156.5 26.5 80.5 26 69 28.5 4
YDZ20C-160 108 - 155 84 70 - - - 106.5 34 34 30 66 32 4.5
YDZ20Y-225 109 - 256.5 105 70 - 329 402 142 19.5 19.5 35 89 53 6.5
YDZ20J-225 (W) 109 144 256.5 105 70 105 329 402 142 19.5 19.5 35 89 53 6.5
YDZ20G-225 109 - 256.5 187 70 - 329 402 227 38 103.5 35 89 53 6.5
YDZ20C-250 109 - 208 105 70 - 300 - 142 19.5 19.5 35 89 44 6
YDZ20C-400 155 - 276 112 102 - 391 450 149.5 32.5 32.5 52 88 72 5
YDZ20Y-400 (W) 155 - 276 112 102 - 391 450 149.5 32.5 32.5 52 88 72 5
YDZ20J-400 (W) 210 280 268 112 140 210 378 425 150 21.5 21.5 62 90 55 5.5
YDZ20G-400 210 - 268 208 140 - 378 394 247 75 121.5 62 90 55 5.5
YDZ20C-630 210 - 268 112 140 - 378 425 150 21.5 21.5 62 90 55 5.5
YDZ20Y-630 (W) 210 - 268 112 140 - 378 425 150 21.5 21.5 62 90 55 5.5
YDZ20J-630 (W) 210 280 268 112 140 210 378 425 150 21.5 21.5 62 90 55 5.5
YDZ20Y-1250 210 - 406 122 140 - 548 588 180 26 26 78 100 143 16
YDZ20J-1250 210 - 406 122 140 - 548 588 180 26 26 78 100 143 16

Type Dimensions (mm) Installation dimensions (mm)
Front connection
W1 L3 H4 H5 A B φd
3P 4P
YDZ20Y-100 70 - 147 55.5 55.5 35 126 5
YDZ20J-100 (W) 70 105 147 55.5 55.5 35 126 5
YDZ20G-100 70 - 147 55.5 55.5 35 126 5
YDZ20C-160 70 - 141 64 64 35 135 4.5
YDZ20Y-225 70 - 212.5 47 90 35 196.5 4.5
YDZ20J-225 (W) 70 105 212.5 47 90 35 196.5 4.5
YDZ20G-225 70 - 212.5 47 100 35 196.5 4.5
YDZ20C-250 70 - 184 75 128 35 172 4.5
YDZ20C-400 102 - 247 80 125 51 240 7
YDZ20Y-400 (W) 102 - 247 80 125 51 240 7
YDZ20J-400 (W) 140 210 233 90 90 70 200 7
YDZ20G-400 140 - 233 85 119 70 200 7
YDZ20C-630 140 - 233 92 92 70 200 7
YDZ20Y-630 (W) 140 - 233 92 92 70 200 7
YDZ20J-630 (W) 140 210 233 92 92 70 200 7
YDZ20Y-1250 140 - 375 - - 70 375 9
YDZ20J-1250 140 - 375 - - 70 375 9


Nine, ordering instructions

When ordering indicate the following points:
Product type and name: If YDZ20 MCCB -630/3318
Instantaneous tripping Current Rating: such as 630A.
Breaker attachment names, specifications, combination code, adopted when the undervoltage release and shunt trip, should indicate the operating voltage (or control supply voltage) value;
Uses: power distribution
Wiring: rear Front connection, Rear connection.
Poles: 4P
Order number: as 230.
Ordering example: YDZ20 -630/3318,4P, AC380V, 630A, 3500 只.

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