Instruction manual

44 45
Usage environment
(1) Ambient temperature : -10 °C to 40 °C
(Applied to the outside of the control board) Average daily atmospheric temperature: 35°C (Max.), Average yearly atmospheric temperature: 25°C (Max.)
(2) Maximum temperature of the : 55°C However, the ambient temperature of boxed MS type is 40°C (Average yearly temperature of the inside of the control board is 40°C or less.).
inside of the control board Please note that the operating characteristics of the Magnetic Contactors and Thermal Overload Relays may vary with the ambient temperature.
(3) Ambient temperature : 45% to 85% RH However, dew condensation and freezing should be avoided.
(4) Height above sea level : 2000 m or less
(5) Vibration : 10 to 55 Hz, 19.6 m/s
2
or less
(6) Impact : 49 m/s
2
or less
(7) Atmosphere : Inclusion of dust, smoke, corrosive gas, moisture, salt content and the like in the atmosphere should be avoided as much as possible.
Please note that continuing to use the device in a closed condition for a long period may cause contact failure.
Never use the device under an atmosphere that contains flammable gas.
(8) Storage temperature/Relative humidity : -30°C to 65°C 45% to 85% RH However, dew condensation and freezing should be avoided.
The storage temperature is ambient temperature during transportation or storage and should be within the usage temperature when starting to use the device.
Mounting
(1) The device should be mounted in a dry location low in dust and vibration.
(2) The normal mounting direction is the direction shown in Fig. 1 on a vertical surface, but mounting the device at an inclination angle of up to 30 degrees in either direction is allowed. (Fig. 2)
(3) Mounting the device on a floor or ceiling is not allowed. (Mounting the device on a floor or ceiling may affect the continuity performance, operation performance, and durability of the contact.)
(4) If mounting the device in a horizontal orientation cannot be avoided, be sure to rotate the device by 90 degrees in a counterclockwise direction from the normal mounting direction as shown in figure 3 when mounting it.
If the device is mounted in a horizontal orientation, its characteristic is nearly unchanged but mechanical durability may be deteriorated. Horizontal mounting of reversing type is not allowed.
●Tightening torque of mounting screw
The device should be mounted by force of tightening torques shown in the right table.
●Mounting of IEC 35mm wide rail
Screw size
Tightening torque of mounting screw
N·m
M4 1.2 to 1.9
●Direct mounting
Top
Bottom
Top
Bottom
30°
30°
30°
30
°
Normal
90
°
Fig.1. Normal mounting Fig.2. Inclined mounting Fig.3. Horizontal mounting
Warranty and Safety
Solve Together
About Handling
Note
Precautions for Use
●Performance
The performance described in this catalog is based on the result of a test conducted under the conditions specified in the Standard (IEC60947-4-1 "Low-voltage
switchgear and controller" etc.). If actual use condition is different from this test condition, the user must evaluate the condition (by using an actual device).
●Use condition
Although the device can operate without any problem when under the conditions described in this chapter, be careful about the following
matters.
(1) Ambient temperature
Even when the device is used in accordance with normal usage, deterioration of the insulation will progress.
In particular, as the ambient temperature increases, the insulation life is shortened. In general, it is said that every time the ambient
temperature increases by 6 to 10°C, the insulation life decreases by half (Arrhenius law). In a case where the ambient temperature is high and
voltage exceeding the rated voltage is continuously applied to coil, the coil temperature increases and life may be shortened dramatically.
(2) Vibration/Impact
Although vibration of 19.6m/s
2
and impact of 49m/s
2
do not cause contact malfunction, even when the vibration and impact are below these
values but are applied continuously, fatigue failure may cause some trouble.
In particular, please note that the resonance of an installed board may exert a large vibration on the product.
Be sure to periodically check the Magnetic Starters and apply danger prevention measures on the sequence of important circuits.
(The Magnetic Starters contacts may suffer from defective continuity, welding, and burning. )
When performing installation, wiring, and maintenance & inspection, be sure to disconnect the Magnetic Starters from the power
supply. It may cause electric shock. In addition, the malfunction attributable to vibration, impact, and false wiring may exert serious
results (machine malfunction, short-circuiting of power supply, etc.) on the Magnetic Contactors.
1
2
Rail Rail specifications
TH35-7.5
TH35-15
Rail width: 35mm, Rail height: 7.5mm
Rail width: 35mm, Rail height: 15mm
15°
15
24
1±0.04
27
7.5
0
-0.4
1±0.04
0.3 or less
35±0.3
Z
Height: 7.5mm
"Z" Details
Height: 15mm
"Z" Details
TH35-7.5
TH35-15
Rail
250
500
Frame
L L L
Mounting screw pitch
S-T10
S-T12
S-T20
S-T21
S-T25
S-T32
SR-T5
SR-T9
0
Frame
Minimum mounting space
A(A1, A2) dimension
[mm]
B(B1, B2) dimension
[mm]
C (C1) dimension
[mm]
Arc
Space
(Note 1)
Upper mounting
space
E
41
(A1 = 53, A2 = 65)
48
(A1 = 60, A2 = 72)
68
(A1 = 80, A2 = 92)
48
(A1 = 60, A2 = 72)
48
(A
1 = 60, A2 = 72)
48
5
(B1 = 17,
B2 = 29)
10
(C 1 = 22)
10
D dimension
[mm]
15 5
(Note 3)
3
(Note 2)
5 (Note 2)
Mounting space and arc space
●Mounting space and arc space
Note 1. The value of this arc space is a value of IEC and JIS Standards-based closed circuit shut-off capacity test.
Note 2. Although the B dimension of T10 to T32 allows closely-attached mounting, when continuing to apply current to
the device or when mounting a product high in open/close frequency and high utilization on the same rail, the
device life may be shortened in terms of temperature increase and impact, so please keep the space between
the devices over the minimum value shown in the above table as much as possible when mounting them.
Note 3. E dimension is 3mm when mounting UT-AX2 or UT-AX4 with contactors.
A(A1, A2)
B
(B
1, B2)
C
(C
1)
D
E
Grounding metal
Grounding metal
Grounding metal
When mounting the Magnetic Contactors side by side, be sure to keep the devices isolated by a distance longer than the dimension
shown in the following table. Also, the Magnetic Contactors and adjacent grounding metal should be isolated by a distance longer than the
dimension shown in the following table. The content described in ( ) is applied when additionally mounting auxiliary contacts.
Although an arc space is not required in a position above the Magnetic Contactors, it is recommended to provide a space longer than the
E dimension shown in the following table in consideration of the product movement caused by variation in depth dimension of Magnetic
Contactors and the vibration produced when turning on or releasing the contactor.
(1) T10 to T32 types and SR-T type are standard devices allowed to be mounted
on an IEC 35mm wide rail.
(2) DIN, EN, IEC, and JIS C2812 standards-compliant 35mm wide rails come in
two types: 7.5mm and 15mm in rail height. Their shapes and dimensions are
as shown in the figure below.
Burring should
be avoided.
(3) Maximum pitch of rail mounting screw L(mm)
When mounting a rail on a surface of the board, be sure to
keep the rail mounting screw pitch below the dimension shown
in the following table in order to secure sufficient mechanical
strength.
Mounting
screw
Additional
auxiliary contact
(Shadowed area)
A1, B1, C1: When an auxiliary
contact is added to
the shadowed area
A
2, B2 : When two auxiliary
contacts are added
to the shadowed
area
MS-T Series IntroductionSelection and Application
Application to Thermal Overload Relays
Product IntroductionOverseas StandardType CodesOrder ProcedureOutline DrawingWarranty and Safety
SR-T5,T9
S-T10, T12, T20, T21,
T25, T32