SE Digest 178

MasterPact™ Power Circuit Breakers

MasterPact™ MTZ Circuit Breakers Class 0614 / Refer to Catalog 0614CT1701

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Table 7.142 Secondary Terminal Block Kits (cont'd.) Fixed MTZ1/2/3

Drawout MTZ1

Drawout MTZ2/3

Ring Tongue Kit 1b MTZ2-3 Ring Tongue Kit 1a & 1b MTZ2-3

— —

— —

LV839297SP LV839298SP

Table 7.143: Accessories for MicroLogic X Control Units

Catalog Number

24–30Vdc 48–60Vdc 100–125 Vdc 110–130 Vdc 200–240 Vdc

LV454440 LV454441 LV454442 LV454443 LV454444

External power supply module (AD)

Interlocks Catalog Numbers

Description

Catalog Number

Door Interlock Door interlock MTZ1 Door interlock MTZ2/3 Cable-type door interlock

Right and left-hand side of cradle (VPECD or VPECG) Right and left-hand side of cradle (VPECD or VPECG)

LV833172SP LV847914SP LV848614SP

1 complete assembly for MasterPact MTZ2/MTZ3 fixed or drawout device

Mechanical Interlocking for Source Changeover for MTZ2/3

Rod Interlock kit: 1 set of 2 adaptation fixtures for MasterPact MTZ2 or MTZ3 fixed or drawout device

LV847930SP

Interlocking of 2 devices using connecting rods Choose 1 set of 2 adaptation fixtures (1 for each device) + 1 set of rods

1 set of 2 interlocking rods LV833210SP Can be used with 1 MTZ2/3 fixed + 1 MTZ2/3 drawout. Note: the installation manual is enclosed. Interlocking of 2 devices using cables [1]

1 adaptation fixture for MasterPact MTZ2/3 fixed devices

LV847926SP LV847926SP LV833209SP LV848610SP LV848609SP LV848608SP

Interlocking of 2 devices using cables [1] Choose 2 adaptation sets (1 for each device + 1 set of cables)

Cable mouinting plate: 1 adaptation fixture for MasterPact MTZ2/3 drawout devices

Cable interlock: 1 set of 2 cables

3 sources, only 1 device closed, fixed or drawout devices 2 sources + 1 coupling, fixed or drawout devices 2 normal + 1 replacement source, fixed or drawout devices

Interlocking of 3 devices using cables Choose 3 adaptation (including 3 adaptation fixtures + cables)

Neutral Sensors Catalog Numbers Table 7.144: Neutral Sensor Parts

Catalog Number

Neutral Sensor Wiring Harness for MTZ1/2 Neutral Sensor Wiring Harness for MTZ3

LV848907SP LV848906SP LV833579SP LV848891SP

External sensor (SGR) [8]

MDGF/SGR (Source Ground Return) Sensor plug

MDGF summing module for MTZ2/3

Table 7.145: MasterPact MTZ1 External Neutral Sensors UsedWith Sensor Plug

External Neutral Sensor For General Use

Circuit breakers with standard neutral protection

400–1600A 400–1000A 1200–1250A

LV833576SP LV833576SP LV834035SP LV834036SP

Circuit breakers with oversized neutral protection [9]

External Sensor for Neutral Ground-Fault Protection (TCE)

1600A

Table 7.146: MasterPact MTZ2/MTZ3 External Neutral Sensors Description External Neutral Sensor For Residual Ground Fault

For 3P Circuit Breaker with Oversized Neutral Protection [10]

MasterPact MTZ2 Circuit Breakers

400

600–630 800 1000 1200–1250

LV834037SP

LV834037SP

LV834035SP

Sensor Plug

1600 2000 2500 3000

LV834035SP

LV834036SP

External Sensor for Source Ground-Return Protection

LV834036SP

3200 4000 MasterPact MTZ3 Circuit Breakers

—

2000 2500 3000 3200 4000 5000 6000 6300

LV848891SP Replaces S48891 48891 7 MINIATURE AND MOLDED CASE MDGF

S1 Modified Differential Ground Fault Interface Module Módulo de interfaz de falla a tierra diferencial modificada Module d'interace de défaut à la terre différentiel modifié

LV848182SP

Sensor Plug Kit includes qty. (2) neutral sensors

LV848182SP

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CIRCUIT BREAKERS

[8] Four MDGF sensors (phase + 1 neutral) are required for MTZ2; eight MDGF sensors are required for MTZ3. For SGR system only one sensor (neutral) is required for MTZ2; two sensors for MTZ3 [9] Oversized neutral protection = 1.6 Ir where Ir = long time pick-up [10] Oversized neutral protection = 1.6 Ir where Ir = long time pick-up.

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