0613CT0001

Remote Operation Accessories

MasterPacT Circuit Breaker Equipped for Remote ON/OFF Function

Cluster shield is not shown

The remote ON/OFF function is used to remotely open and close the circuit breaker. It is made up of the following components:

Optionally, the function may be completed with:

  • A ready-to-close contact (PF).

  • An electrical closing push button (BPFE).

  • A remote reset following a fault (RES).

  • The remote operation function may be completed with:

  • Auxiliary contacts (OF).

  • Overcurrent trip switch (SDE).

Wiring Diagram for Remote ON/OFF Function by Communication Network

NOTE: Induced voltages in the circuit at terminal C2 and/or A2 can cause the shunt close to not work properly. The best way to control induced voltages is to keep the circuit to terminal C2 and A2 as short as possible. If it is impossible to keep the circuit less than 10 feet (3 m), use an interposing relay near terminal C2 or A2.
NOTE: When communicating MX1 or XF coils are used, terminal (C3 or A3) must be connected to line even if the communication module is not installed. The bypass circuit through terminal C2/A2 is only momentary duty for 0.5 sec. For continuous duty, use the communications command.

Terminals

Terminal

Terminal Characteristics

Standards UL 486E
Termination Capacity 22–14 AWG solid or stranded wire with max. O.D. of insulation 3.5 mm
Current Nominal 10:00 AM
Minimum 100mA at 24 V
Pull-Out Forces 22 AWG = 4.5 lbs. (20 N)
20 AWG = 6.75 lbs. (30 N)
18 AWG = 6.75 lbs. (30 N)
16 AWG = 9 lbs. (40 N)
14 AWG = 11.5 lbs. (50 N)

Spring-Charging Motor (MCH)

Spring-Charging Motor (NW)

Spring-Charging Motor (NT)

The spring-charging motor automatically charges the spring mechanism for closing the circuit breaker and also recharges the spring mechanism when the circuit breaker is in the ON position. Instantaneous reclosing of the circuit breaker is thus possible following circuit breaker opening. The spring-mechanism charging handle is used only as a backup if auxiliary power is absent.

The spring-charging motor is equipped as standard with a limit switch contact (CH) that signals the charged positio

Spring-Charging Motor Characteristics

Characteristics

MCH

Voltage Ratings (Vn)

Vac 50/60 Hz

48/60, 100/130, 200/250, 240/277, 380/415, 400/440, 480

Vdc

24/30, 48/60, 100/125, 200/250

Operating Threshold

0.85 to 1.1 Vn

Power Consumption

180 VA

Motor Overcurrent

2–3 x In for 0.1 s

Charging Time

4 s maximum on NW, 3 s maximum on NT

Duty Cycle

3 cycles per minute maximum

Endurance

10,000 cycles for NW < 4000 A

5000 cycles for NW ³ 4000 A

CH Contact

10 A at 240 V

Shunt Trip (MX1) and Shunt Close (XF)

Maximum Wire Length—The inrush currents for these devices are approximately 200 VA. When low supply voltages (12, 24 or 48 V) are used, the maximum allowable wire length is dependent on the voltage and the wire size.

Device

Percent of Source Voltage

Source Voltage

   

12 Vdc

24 Vdc

48 Vdc

Wire Size

 

14 AWG
(2.08 mm2)

16 AWG
(1.31 mm2)

14 AWG
(2.08 mm2)

16 AWG
(1.31 mm2)

14 AWG
(2.08 mm2)

16 AWG
(1.31 mm2)

UVR (MN)

100%

159 ft. 
(48.5 m)

100 ft. 
(30.5 m)

765 ft. 
(233.2 m)

472 ft. 
(143.9 m)

85%

44 ft. 
(13.4 m)

29 ft. 
(8.8 m)

205 ft. 
(62.5 m)

129 ft. 
(39.3 m)

Shunt Trip (MX) and Shunt Close (XF)

100%

57 ft. 
(17.4 m)

34 ft. 
(10.4 m)

314 ft. 
(95.7 m)

200 ft. 
(61.0 m)

1503 ft.
(457.8 m)

944 ft. 
(287.7 m)

85%

27 ft. 
(8.2 m)

17 ft. 
(5.2 m)

205 ft. 
(62.5 m)

126 ft. 
(38.4 m)

957 ft. 
(291.7 m)

601 ft. 
(183.2 m)

Shunt Trip (MX1) and Shunt Close (XF)

Shunt Trip (MX1): When energized, the shunt trip instantaneously opens the circuit breaker. The shunt trip may be energized continuously or intermittently.

Shunt Close (XF): Remotely closes the circuit breaker if the spring mechanism is charged.

Do not use a standing close order on the shunt close coil (XF). Any opening order will open the circuit breaker so a standing close order is not necessary. See Features and Benefits.

Communication versions of the MX1 and XF are available for direct connection via the circuit breaker communication module (BCM ULP).

Shunt Trip and Shunt Close Characteristics

Characteristics

MX1 and MX2

XF

Min

Max

Voltage Ratings (Vn)

Vac
50/60 Hz

24 Vac

17 Vac

26 Vac

48 Vac

34 Vac

52 Vac

120 Vac

60 Vac

132 Vac

240 Vac

168 Vac

264 Vac

277 Vac

194 Vac

304 Vac

380 Vac

266 Vac

418 Vac

480 Vac

336 Vac

528 Vac

Vdc

12 Vdc

8 Vdc

13 Vdc

24 Vdc

17 Vdc

26 Vdc

48 Vdc

34 Vdc

52 Vdc

125 Vdc

88 Vdc

137 Vdc

250 Vdc

175 Vdc

275 Vdc

Operating Threshold

0.7 to 1.1 Vn

0.85 to 1.1 Vn

Power Consumption (VA or W)

Steady-State/Inrush

4.5/200

Circuit Breaker Response Time at Vn*

50 ms ±10
(NW and NT)

70 ms ±10 (NW ≤ 4000 A)
80 ms ±10 (NW > 4000 A)
55 ms (NT)

Additional Shunt Trip (MX2) or Undervoltage Trip (MN)

Second Shunt Trip (MX2)

This function opens the circuit breaker via an electrical order.

It is made up of:

  • Shunt trip (MX2, second MX) or,

  • Undervoltage trip (MN)

    • Instantaneous trip

    • Fixed undervoltage trip (time delayed) or,

    • Adjustable undervoltage trip (time delayed)

Remote Tripping Function Wiring

As shown in the wiring diagram for the remote tripping function, the delay unit (installed outside the circuit breaker) may be disabled by an emergency off button to obtain non-delayed opening of the circuit breaker.

When energized, the shunt trip (MX1 or MX2) instantaneously opens the circuit breaker.

The undervoltage trip (MN) instantaneously opens the circuit breaker when its supply voltage drops to a value between 35% and 70% of its rated voltage.

If the undervoltage trip is not energized, it is impossible to close the circuit breaker, either manually or electrically. An attempt to close the circuit breaker produces no movement of the main contacts. Closing is allowed when the supply voltage of the undervoltage trip reaches 85% of rated voltage.

Characteristics

MN

Voltage Ratings (Vn)

Vac
50/60 Hz

24 Vac

48 Vac

120 Vac

240 Vac

277 Vac

380 Vac

480 Vac

Vdc

12 Vdc

24 Vdc

48 Vdc

125 Vdc

250 Vdc

Power Consumption (VA or W)

Constant/Inrush

4.5/200

Operating Threshold

Opening

0.35 to 0.70 Vn

Closing

0.85 Vn

Circuit Breaker Response Time at Vn

NW

90 ms ±10

NT

40 ms ±10

Time-Delay Module for Undervoltage Trip

Time-Delay Module for Undervoltage Trip (MN)

To eliminate circuit breaker nuisance tripping during temporary voltage dips (micro-breaks), operation of the undervoltage trip (MN) can be delayed. This function is achieved by adding an external delay unit (either adjustable or non-adjust

Time-Delay Module Characteristics

Voltage Ratings of Undervoltage Trip

Vac 50/60 Hz

24/30, 48/60, 100/130, 200/250, 380/480

Vdc

24/30, 48/60, 100/130, 200/250

Voltage Ratings of Time-Delay Module

Adjustable

Vac 50/60 Hz

48/60, 100/130, 200/250, 380/480

Vdc

48/60, 100/130, 200/250, 380/480

Non-Adjustable

Vac 50/60 Hz

100/130, 200/250

Vdc

100/130, 200/250

Operating Threshold

Opening

0.35 to 0.7 Vn

Closing

0.85 Vn

Power Consumption

4.5 VA/W (Holding), 200 VA/W (Inrush)

Time-Delay Settings

Adjustable

0.5, 0.9, 1.5, and 3.0 s

Ready-to-Close Switch (PF)

Ready-to-Close Switch (PF)

The ready-to-close position switch indicates that the following conditions are met and the circuit breaker can be closed:

  • The circuit breaker is open.

  • The closing springs are charged.

  • There is no standing closing or opening order.

Ready-to-Close Switch Characteristics

Type of Contact

1a/1b Form C

Maximum Number of Contacts

1

Breaking Capacity at a
Power Factor (p.f.) of 0.3

Standard: 100 mA/24V minimum load

Low-Level: 2 mA/15 V minimum load

240/380 Vac

5:00 AM

24/48 Vac

3:00 AM

480 Vac

5:00 AM

240 Vac

3:00 AM

600/690 Vac

3:00 AM

380 Vac

3:00 AM

24/48 Vdc

3:00 AM

24/48 Vdc

3:00 AM

240 Vdc

0.3 A

125 Vdc

0.3 A

380 Vdc

0.15 A

250 Vdc

0.15 A

Electrical Closing Push Button (BPFE)

Electrical Closing Push Button (BPFE)

Located on the front panel of the circuit breaker, this push button carries out electrical closing of the circuit breaker, taking into account all of the safety functions that are part of the control/monitoring system of the installation. The push button is installed on the control circuit of the shunt close, and connects to the communicating shunt close module (XF-COM). Terminal A2 of XF-COM is used to remotely close the circuit breaker.

Remote Reset (RES) and Automatic Reset After Fault

  • Remote reset (RES): following tripping, the remote reset (RES) resets the overcurrent trip switch (SDE) and the mechanical indicator. (Voltage rating: 110/130 Vac and 200/240 Vac.) RES is not compatible with an additional overcurrent trip switch (SDE2).

  • Automatic reset after fault-trip: following tripping, a reset of the mechanical indicator (reset button) is no longer required to enable circuit breaker closing (factory adjustable only).

QR Code is a registered trademark of DENSO WAVE INCORPORATED in Japan and other countries.

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