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Product Features

The FTM2 series of moulded-case circuit-breakers can be equipped with:

- thermomagnetic trip units, for direct and alternating current network protection, using the physical properties of a bimetal and an electromagnet to detect the overloads and short-circuits;

- electronic trip units, for alternating current network protection. Releases with microprocessor technology obtain protection functions that make the operations extremely reliable and accurate. The power required for operating them correctly is supplied straight from the current sensors of the releases. This ensures that they trip even in single-phase conditions and on a levelwith the minimum setting.

- Small size,compact design

- With the same frame size, the circuit breakers are available wi th different breaking capacities and different rated currents.

- Widely adjustable electronic trip units

- Frames made of rigid materials of recyclable enginnering plastics,

- Modular and easy-to-fit internal accessories

- The internal accessories are extremely easy to install. No tools are required because they are simply snapped into place in the accessories compartments to the left and right of the handle.

Technical Data

Frame size		160			250
Model		FTM2-160C	FTM2(Z)-160L	FTM2(Z)-160H	FTM2(Z)-250L	FTM2(Z)-250H	FTM2-400C
Rated current (A)	FTM2	20,25,32,40,50,63,80,100,125,160			160180200225250
	FTM2Z	63(25-63), 160(64-160)			250(100-250)

Frame size		400					800
Model		FTM2-400C		FTM2(Z)-400L		FTM2(Z)-400H	FTM2-800C		FTM2(Z)-800L		FTM2(Z)-800H
Rated current (A)	FTM2	20,25,32,40,50,63,80,100,125,169					160180200225250
	FTM2Z	63(25-63), 160(64-160)					250(100-250)
Number of poles		3-Poles,4-Poles
Rated voltage (V) AC		400
Rated insulationvoltage(V)		690
Rated impulse withstand voltage Uimp(KV)		6
Rated frequency		50/60Hz
Ultimate short-circuit capacity Icu (KA)		40			50	70	40			50		70
Service short-circuit capacity Ics (KA)		28			50	50	28			50		50
Electrical life:		3,500
Mechanical life:		13,000
Arcing distance(mm)		Zero
Ambient temperature (°C)		-5°C ~ +40°C
Altitude (m)		≦2000m
Atomospheric conditions		When the ambient air temperature is +40℃, the relative humidity of the air shall not be higher than 50%; a higher relative humidity is allowed at a lower temperature; for the wettest month, the maximum relative humidity averaged shall be 90% while the lowest temperature aeraged in that month +25℃,and the condensation produced due to temperature change shall be taken into consideration,
Pollution degree		Ⅲ
Connection		Front connection plate,rear connection plate,plug-in rear connection plate
Dimensions		L	257					275
		W	3-Pole:140 4-Pole:184					3-Pole:210 4-Pole:280
		H1	95					95
		H	153					153

Frame size		160			250
Model		FTM2L(Z)-160L		FTM2L(Z)-160H	FTM2L(Z)-250L		FTM2L(Z)-250H
Rated current (A)	FTM2L	20,25,32,40,50,63,80,100,125,160			160,180,200,225,250
	FTM2LZ	63(25～63 adjustable), 160(64～160 adjustable)			250(100～250 adjustable)
Number of poles		3-Poles,4-Poles
Rated insulation voltage(V)		690
Rated impulse withstand voltage Uimp(KV)		6
Rated frequency		50/60Hz
Ultimate short-circuit capacity Icu (KA)		50		70	50		70
Service short-circuit capacity Ics (KA)		50		50	50		50
Electrical life:		5,000
Mechanical life:		20,000
Arcing distance(mm)		Zero
Ambient temperature (°C)		-5°C ~ +40°C
Altitude (m)		≦2000m
Atomospheric conditions		When the ambient air temperature is +40℃, the relative humidity of the air shall not be higher than 50%; a higher relative humidity is allowed at a lower temperature; for the wettest month, the maximum relative humidity averaged shall be 90% while the lowest temperature aeraged in that month +25℃,and the condensation produced due to temperature change shall be taken into consideration,
Pollution degree		Ⅲ
Connection		Front connection plate,rear connection plate,plug-in rear connection plate
Dimensions		L	155			165
		W	3-Pole:90 4-Pole:120			3-Pole:105 4-Pole:140
		H1	68.5			69.5
		H	100			105

Frame size		400			800
Model		FTM2L(Z)-400L		FTM2L(Z)-400H	FTM2L(Z)-800L		FTM2L(Z)-800H
Rated current (A)	FTM2L	250,315,350,400			160,180,200,225,250
	FTM2LZ	400(160～400 adjustable)			800(320～800 adjustable)
Number of poles		3-Poles,4-Poles
Rated insulation voltage(V)		690
Rated impulse withstand voltage Uimp(KV)		6
Rated frequency		50/60Hz
Ultimate short-circuit capacity Icu (KA)		50		70	50		70
Service short-circuit capacity Ics (KA)		50		50	50		50
Electrical life:		3,500
Mechanical life:		13,000
Arcing distance(mm)		Zero
Ambient temperature (°C)		-5°C ~ +40°C
Altitude (m)		≦2000m
Atomospheric conditions		When the ambient air temperature is +40℃, the relative humidity of the air shall not be higher than 50%; a higher relative humidity is allowed at a lower temperature; for the wettest month, the maximum relative humidity averaged shall be 90% while the lowest temperature aeraged in that month +25℃,and the condensation produced due to temperature change shall be taken into consideration,
Pollution degree		Ⅲ
Connection		Front connection plate,rear connection plate,plug-in rear connection plate
Dimensions		L	257			275
		W	3-Pole:140 4-Pole:184			3-Pole:140 4-Pole:184
		H1	95.0			97.5
		H	153			153

Initial status

Cold status

Right after test 1

Initial status

Cold status

Right after test 1

16～256s step 4s

(2～10)Ir1,OFF step 0.05Ir1

(0.05～0.3)s step 0.05s

Technical data of intelligent trip unit

LED function indication:

- LED on with steady green light indicating that the trip unit is supplied correctly; LED with flashing red light, indicates fault diagnosis

- LED with flashing yellow light, indicates pre-alarm for current exceeding 0.9xI;

- LED with steady red light,indicates current exceeding 1.2xIn for

Front panel indication

1. Electronic tripping test interface
2. adjustable setting of long time-delay current
3. adjustable setting of long time-delay time
4. adjustable setting of short time-delay trip current
5. adjustable setting of short time-delay time
6. adjustable setting of instantaneous trip current
7. adjustable setting of earth fault trip current

 Operating keys for setting tripping parameters

1.     ENTER button to confirm data or change pages
2.     ESC Button to exit submenus or cancel operations   
3.     scroll up(Cursor UP button)
4.     scroll down(Cursor DOWN button)     Electronic trip unit test interface

 Telecommunication trip unit

The main protection function: long time-delay overload protection, short time-delay short circuit protection, instantaneous short circuit protection, residual current protection, ground-fault protection.

telecommunication interface:

- The trip unit allows the circuit breaker to be integrated in a communication network based on the Modbus protocal,the devices provide standard RS485 interface as the physical means for tada transmission. It allows a wide range of information to acquired and transmitted remotely.

- programming the electronic trip unit in remote mode;

- to know the state of the circuit breaker(open/closed/tripped) in remote mode.

 Tripping curve

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This is a demonstration on how I connected two UPS’s together to double the output power capability and make a 3000 Watt sinewave inverter. There are some considerations in doing this which I do not cover in the video, and attempting this is a good way to destroy two UPS’s/Inverters so think things through and be careful!

I used Smart UPS 1500 RM2U units, but this general information applies to all APC Smart UPS models and I believe it can be made to work with any APC Smart UPS product of this vintage.

Although no special precautions are needed to do what is shown in the video, this setup is capable of producing a voltage level more dangerous than that of a typical 240V electrical outlet and is potentially lethal. Please only attempt this if you are familiar with basic electrical safety or have experience working with dangerous voltage levels.

Basic Electrical Safety

http://www.labtrain.noaa.gov/osha600/refer/menu12a.pdf