TM1Z DC Moulded Case Circuit Breaker
Type and Classifications
Note:No code for operating directly with handle，“P”for power-driven and“Z”for turning handle manually.
◎Classification according to pole numbers:two poles，three poles and four poles
◎Classification according to rated current（In）：
TM1Z-125 has ten grades：16、20、25、32、40、50、63、80、100A、125A.
TM1Z-250 has eight grades：100、125、140、160、180、200、225、250A.
TM1Z-400 has five grades：225、250、315、350、400A.
TM1Z-630 has three grades：400、500、630A.
TM1Z-800 has three grades：630、700、800A.
◎The wiring method has three wiring methods:wiring in front of the board、wiring on back of the board、insertion type.
◎According to the over-current release pattern, it would be divided two types: thermo-electromagnetic(double) types and electro magnetic(instantaneous) types.
Application Environment Conditions
◎Elevation ≤2000m
◎Ambient temperature:-5℃~+40℃
◎Breakers can tolerate the influence of moisture in the air.
◎Breakers can tolerate the influence of salt fog and oil fog.
◎Breakers can tolerate the influence of mycete.
◎The gradient≤±22.5°
◎Be working reliably under the condition of normal vibration on ship.
◎Be working reliably when earthquake(4g) occurring.
◎There must be not any explosive medium, and there must be not any gas which would corrode metal or any con-ducting dust which would destroy the insulation.
◎The place would not be invaded by rain and snow.
Protection Feature
The thermodynamic release of a circuit breaker provides the feature of inverse time-delay,while the magnetic release features of instantaneous operation as shown on table 1(distribution circuit breaker)and table 2(motor protection circuit breaker)
Table 1
| Rated current of release(A) |
Thermodynamic release (ambient temp.+40℃for land) | Electromagnetic release action current (A) |
|
| 1.05ln(Cold state) not acting time | 1.30In(Heat state) acting time | ||
| 10≤ln≤63 | ≥1 | <1 | 10In±20% |
| 63≤In≤250 | ≥2 | <2 | |
| 225≤In≤800 | ≥2 | <2 | 5In±20% 10In±20% |
Table 2
| Rated current of release(A) |
1.05In(Cold state) not acting time |
1.20In(Heat state) acting time |
1.5In(Cold state) acting time |
7.2ln(Heat state) acting time |
Electromagntic release action current(A) |
| 10≤In≤250 | ≥2 | ≤2 | 4min | 4s<TP≤10s | 12In±20% |
| 225≤In≤800 | 8min | 6s<TP≤20s |
Release Pattern and Accessories Code
Note:
◎200: breaker only has electromagnetic release pattern;300: breaker has thermo-electromagnetic release pattern.
◎For TM1Z-125,250 four-pole types circuit breakers, has no following accessories code:218,318,248,348
◎For TM1Z-400, TM1Z-630 and TM1Z-800, codes 248 348 only have one pair of auxiliary contacts(a normal opened,a normal closed), but 268、368 have three pairs of auxiliary contacts(three normally-opened, three normally-closed)
Main Technical Performance Parameters of the Breaker
Table 4
| Type | TM1Z-125L | TM1Z-125M | TM1Z-250L | TM1Z-250M | TM1Z-400 | TM1Z-630 | TM1Z-800 |
| Rated current(A) | 16,20,25,32,40, 50,63,80,100,125A |
100,125,140,160, 180,200,225,250A |
225,250,315, 350,400 |
400,500,630 | 630,700,800 | ||
| Pole numbers | 2P,3P,4P | 2P,3P,4P | 3P,4P | 3P,4P | 3P,4P | ||
| DC working voltage | 2P:DC500V 3P:DC750V 4P:DC1000V | ||||||
| lcs | 6kA | 15kA | 6kA | 15kA | 6kA | 6kA | 6kA |
| lcu | 6kA | 20kA | 6kA | 20kA | 6kA | 6kA | 6kA |
| Action current value of instantaneous short circuit release |
10ln | 10ln | 5ln/10ln | 5ln/10In | 5ln/10In | ||
| Arc-over distance(mm) | 50 | 50 | 100 | 100 | 150 | ||
Note:When ordering，the working voltage of the breaker must be written clearly.
◎Table 5 for the cross-sectional area of wiring cable and corresponding rated current
Table 5
| Rated current(A) |
10 | 16 20 |
25 | 32 | 40 | 63 | 8o | 100 | 125 | 160 | 180 201 200,225 |
250 | 315 350 |
400 | ||||
| Wire cross- sectional area (mm²) |
1.5 | 2.5 | 4 | 6 | 10 | 16 | 25 | 35 | 50 | 70 | 95 | 20 | 185 | 240 | ||||
| Rated current(A) | Cable | Copper bar | ||||||||||||||||
| Cross-sectional area | Number | Dimensions | Number | |||||||||||||||
| 500 | 150 | 2 | 30×5 | 2 | ||||||||||||||
| 630，700 | 185 | 2 | 40×5 | 2 | ||||||||||||||
| 8o0 | 200 | 2 | 40×5 | 2 | ||||||||||||||
DC Circuit Breaker Choosing Model and Wiring
Capacity-reducing factor
◎Capacity-reducing factor for ambient temperature change see following Table 6
Table 6
Note:Above capacity-reducing factor are all achieved with rated frame current travelling through.
◎Current correction factor and voltage correction factor for elevation change see following table 7
Table 7
| Elevation/m | ≤2000m | ≤3000m | ≤4000m | ≤5000m |
| Rated operational voltage | 1 | 0.85 | 0.8 | 0.7 |
| Correction factor of rated operational current | 1 | 0.93 | 0.88 | 0.82 |
| Correction factor of short-circuit breaking capacity | 1 | 0.83 | 0.71 | 0.63 |
Outline and Mounting Dimensions
◎Outline and mounting dimensions of TM1Z-125、TM1Z-250（wiring in front of the board）shown in table7
Table 8 mm
| Outline dimensions of wiring in front of the board | Mounting dimensions |
|||||||||||||||
| Type | W | L | H | H1 | H2 | H3 | W1 | L1 | L2 | W2 | K | N | A | B | Φd | |
| 3P | 4P | |||||||||||||||
| TM1Z-125 | 92 | 122 | 150 | 86 | 104 | 24 | 7.5 | 30 | 200 | 132 | 17 | 89 | 43 | 30 | 129 | 4 |
| TM1Z-250 | 107 | 142 | 170 | 95 | 115 | 24 | 12 | 35 | 230 | 144 | 24 | 103 | 52 | 35 | 126 | 4 |
| TM1Z-400 | 150 | 198 | 257 | 107 | 155 | 38 | 5 | 48 | 357 | 224 | 31 | 128 | 64.5 | 44 | 194 | 6 |
| TM1Z-630 | 182 | 240 | 270 | 112 | 160 | 43 | 5 | 58 | 370 | 234 | 41 | 138 | 69 | 58 | 200 | 6 |
| TM1Z-800 | 210 | 280 | 280 | 117 | 160 | 42 | 5 | 70 | 380 | 243 | 44 | 136 | 65.5 | 70 | 243 | 6 |
Ordering Notice
◎Product model number and name,e.g:
TM1Z-125(M) DC moulded case breaker.
◎Rated current,e.g:100A
◎Rated voltage,e.g: DC1000V
◎Ordering number,e.g:100 sets
◎Ordering example:
TM1Z-125(M)/100A DC1000V,100sets
