A7 Magnetic Contact/Switch CONTENTS

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2 A7 Magnetic Contact/Switch CONTENTS

3 A7-02 Magnetic Contact / Switch VMC9~85 Medium/Small Capacity VITZRO Magnetic Contact/Switch provides customers with the safety as the first priority which is the core assignment and philosophy of our company. It ensures various protection functions and safety at the users point of view and the operational cycle in terms of electrical and mechanical features is improved to the world-class level by adopting an optimal design structure.

4 Magnetic Contact / Switch A7-03 Magnetic Contact VAU-1 VAU-4 VAU-2 VAU-1 Thermal overload relay Utility World-class level switch operational cycle, its performance was recognized. The electrical and mechanical cycle is improved to the world-class level through an optimal design structure. (VMC 9~85) B Company in Japan 200 A Company in Europe 200 Local L Company 200 ITZRO 250 B Company in Japan 1000 A Company in Europe 1600 Local L Company 2500 ITZRO 2500 Electrical Cycle (10,000 times) Mechanical Cycle (10,000 times) Convenient It is easy to use and the safe structure enables a convenient work. It is possible to install a safety cover (Finger-proof) for contact prevention of magnetic contact. It is very convenient to remove by using a modularized auxiliary contact (option). Removable with Din-Rail installation structure. It is possible to remove the magnetic switch by One Touch without separating VOR from the Din-Rail. When connecting a thermal overload relay to the contact, it is possible to directly connect to the magnetic contact without a separate connector.

5 A7-04 Magnetic Contact / Switch VMC100~200 Large Capacity VITZRO Magnetic Contact/Switch provides customers with convenience by applying a design that maintains the compatibility with various systems. In addition, based on the technology-intensive capability, it provides an advanced product with high reliability.

6 Magnetic Contact / Switch A7-05 Utility Its performance was recognized through technology integration and international standard certifications. It is a product applied with the accumulated switch design and application technologies, operating machine design technology and insulation design technology. It provides the reliability and safety of electric equipments based on the stable quality and intensive technology via a safety certification. Convenient It is easy to use for it is in a safe and convenient structure. It is possible to replace/disconnect the auxiliary contact and operating coil at the attached state. By using a cassette-type coil unit, it is possible to replace and disconnect only the operating coil with the contact in the attached state. Safety It promotes safety and convenience for the users. Public use of the auxiliary contact unit is possible. A clamp terminal is installed in standard at the power source/load part for an easy wiring work.

7 A7-06 Type & How to Order Magnetic Contact & Magnetic Switch Auxiliary Relay Auxiliary Contact

8 Magnetic Contact / Switch A7-07 Thermal Overload Relay

9 A7-08 Standard Product List Magnetic Contact

10 Magnetic Contact / Switch A7-09 Thermal Overload Relay

11 A7-10 Standard Product List Note) 30~35 x 48~59, 35~60 - what does it mean by the second no of 35~60

12 Magnetic Contact / Switch A7-11 Note) 30~35 x 48~59, 35~60 - what does it mean by the second no of 35~60

13 A7-12 Standard Product List/Auxiliary Contact Rating, Number of Auxiliary Contacts Standard Product List

14 Magnetic Contact / Switch A7-13 Auxiliary Contact Rating/Number of Auxiliary Contacts Auxiliary Contact Rating Note) 1. The number inside the ( ) is the nominal by class before the KS change. Number of Auxiliary Contacts Note) 1. The additional attachable contact is the one attached with an auxiliary contact unit. Note) 2. In case of VMC 9~22 products, the auxiliary contact for side attachment can be installed at the left side of the body.

15 A7-14 Selection of Magnetic Switch

16 Magnetic Contact / Switch A7-15

17 A7-16 AC Operating Coil Characteristic AC 220V 60HzStandard The above data is an average. AC Operation Coil Rating 1) It is operated within the range of 85%~110% of the coil rated voltage after the saturation of temperature rise due to the application of coil rated voltage and rated frequency at the peripheral temperature of 40. 2) When it is used beyond the range of rated voltage of operating circuit coil, it promotes insulation aging of the coil and degrades the mechanical durability.

18 Performance of Magnetic Contact A7-17 Magnetic Contact / Switch

19 A7-18 Rated Capacity and DC Rating AC4 Class Rated Capacity Rated Capacity in case of Inching and Reverse Braking Number of Inching Operations 1. Inching(%) = 100 Number Standard Operations 2. Limit of Inching Switch Frequency is 1 time/for consecutive 10 times in 1 second DC Rating (Rated Current VMC 100~220) 2-Pole Series Connection 3-Pole Series Connection

20 Magnetic Contact / Switch A7-19 DC Rating (Rated Current) DC Rating (Rated Current VMC 9~85) 1. DC2 Class is for starting and pausing of DC shunt motor and DC4 Class is for starting and pausing of DC series-wound motor. They are the examples of KS C 4504, JEM DC11 Class is for the inductive coil load (time constant L/R 100ms) and DC1 Class is for the resistance load. They are the examples of KS C 4504, JEM The closing capacity of DC2 Class and DC4 Class is 4 times the above table and the count is 100times. The breaking capacity is 4 times the above table and the count is 25 times. 4. Refer to the figure for 2, 3-pole series connection. 5. An electrical life cycle is 500,000times. 2-Pole Series Connection 3-Pole Series Connection

21 A7-20 Class by Breaking Capacity and Switch Capacity/ Application of Star-Delta Starting Class by Breaking Capacity and Switch Capacity Magnetic Contacts are classified according to the breaking capacity and switch capacity based on the local standard (KS) and overseas standards (IEC, BS, VDE, UL) Rating Type Operation Test Rating based on International Standard, IEC Body Auxiliary Contact Rating Note) 1. The number inside the ( ) is the nominal by class before the KS change.

22 Magnetic Contact / Switch A7-21 Application of Star-Delta Starting Voltage, Current & Torque of Magnetic Contact for Star-Delta Starting Note) Im: Load Current when the motor is delta-connected, Em: Line Voltage, T: Rated Torque (Torque variation is the estimated value) Application of Magnetic Contact during Star-Delta Starting(3-Contact Mode) Note) 1. The above values may vary according the motor class and the manufacturer. It is the reference value selected when using AC3 Class Standard Cage-Type or AC2 Class Coil Type Motors. 2. The motor operation time is based on 10 seconds or under. 3. For the load applied with the phase advance capacitor, calculate it by considering the inrush current of the capacitor. Example of Spot Speed during Star-Delta Starting(3-Contact)

23 A7-22 Standard AC Magnetic Contact Electrical Life Cycle Graph of Magnetic Contact(VMC 9~85) 3 AC 200~220V 3 AC 380~440V

24 Magnetic Contact / Switch A7-23 Electrical Life Cycle Graph of Magnetic Contact(VMC 100~220) 3 AC 200~220V 3 AC 380~440V

25 A7-24 Application of lamp load Incandescent Lamp Instantaneous Transient Current applied with voltage 100V, 40W, 60W for general lighting Excepts for the special cases, an electrical cycle and switching frequency may be less at the lamp load, but there is no problem in using it. Selection Point The total input current of load should not exceed the conducting current of magnetic contact. The inrush current due to lighting should not exceed the open current capacity of magnetic contact. The resistance of incandescent lamp filament is especially small at room temperature. Theoretically, the current of 3~16times the rated current flows when the voltage is applied, but in reality, the transient current is controlled to about 7~10times due to a circuit impedance or self heating. The characteristics on the voltage application to the stable current are shown in the figure. The magnetic contact that is applied to the incandescent lamp considers this transient current and the rated current of the lamp should be selected within the rated current of AC3 Class. The number of lamps that can be switched by the magnetic contact is as the following. Number of Incandescent Lamps that can be Switched

26 Magnetic Contact / Switch A7-25 Fluorescent Lamp A fluorescent lamp is used in combination of a lamp and ballast. According to the starting method of the ballast, it can be classified into a Starter and a Rapid Starter. The starter mode is to light the lamp using a manual switch or an automatic starter (ex. Grow Lamp) and it is widely used at housings. In contrast, the rapid starter mode lights the lamp immediately when it is switched on. It does not have a mechanical contact part and it is widely used at buildings, factories, hospitals, schools and so on. The starting current of the fluorescent lamp varies depending on the existence of a ballast circuit and a condenser for the adjustment of power-factor. However, it is about 10times the lamp current so the magnetic contact should be selected within AC3 Class or under. The number of fluorescent lamp (high power factor type) switching operations for the rapid starter mode based on the magnetic contact is as the following. Number of Rapid Starter Type Fluorescent Lamp(High Power Factor) Switching Operations 1. The number inside ( ) for 40W 1lamp represents the low power-factor type. 2. The number inside ( ) for 40W 2lamps represents the flickerless lamp. (Flickerless Lamp: A fluorescent lamp built in with a circuit to prevent flickering when lighting the lamp)

27 A7-26 Application of lamp load Mercury Lamp A mercury lamp is used in combination with a lamp and ballast and the starting characteristic of the mercury lamp changes according to the ballast type. Ballast Types: Standard Type (Low Power Factor Type, High Power Factor Type), Electrostatic Force Type, Low Starting Current Type and so on. Each starting characteristic is shown in the figure. The starting current of standard low starting current type flows for several minutes which is 1.2~1.8 times the ballast. Also, the starting current of electrostatic force type is less than the ballast. A high power factor type is inserted in parallel to the condenser power which is for the adjustment of power factor, so an inrush current flows when it is instantaneously lighted. (Example on Starting Characteristic) When using a magnetic contact, the amount of over-current based on the starting current of standard type and low starting current type should be considered but there is no problem generated for the magnetic contact even though the current of 1.2~1.8times the rated current flows for several minutes. It is recommended to select an input current of the ballast within the rated current of AC3 Class and the number of standard mercury lamp switching operations using the magnetic contact is as the following. Number of Standard Mercury Lamp Switching Operations

28 A7-27 Magnetic Contact / Switch Mercury Lamp Table on Application of Transformer

29 A7-28 Connectable Wire & Connecting Torque/ Operational Condition & Installation Main Circuit Operating Circuit ø ø ø ø ø ø ø ø ø ø ø ø ø ø ø ø

30 Magnetic Contact / Switch A7-29 Operational Condition & Installation General Operating Condition Installation 1) Install at a dry place with less vibration. 2) It is normal to mount in a vertical way but it can also be mounted up to 30to each direction. 3) If it is installed horizontally, its operational cycle and various features may be degraded when compared to the normal mounting state. Horizontal Installation Standard Installation Din-Rail

31 A7-30 External Dimensions & Mounting Dimensions External Dimensions & Mounting Dimensions

32 Magnetic Contact / Switch A7-31 External Dimensions & Mounting Dimensions

33 A7-32 Auxiliary Relay Rating Performance Operating Coil Characteristics AC 220V 60Hz Standard

34 Magnetic Contact / Switch A7-33 External Dimensions & Mounting Dimensions

35 A7-34 Auxiliary Contact Unit/ External Dimensions & Mounting Dimensions For Head-Mounting For Side-Mounting Rating Performance

36 Magnetic Contact / Switch A7-35 External Dimensions & Mounting Dimensions Mounting & Disassembling Method Push the hook of an auxiliary contact unit until it reaches the head groove of the head part. After the installation, check whether it is operated smoothly by pressing a cross bar Lift the hook of the auxiliary contact unit when disassembling. Press the cross bar of the magnetic contact and assemble the cross bar of the auxiliary contact unit to the side-contact part After the installation, check whether it is operated smoothly by pressing a holder. When disassembling, use a (-) driver for the auxiliary contact unit hook.

37 A7-36 Certification

38 Magnetic Contact / Switch A7-37