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參數(shù)資料
| 型號： | 44H90-12-1-04N |
| 廠商： | GRAYHILL INC |
| 元件分類： | 開關(guān) |
| 英文描述： | ROTARY SWITCH-4POSITIONS, SP4T, LATCHED, 0.025A, 28VDC, PANEL MOUNT-THREADED |
| 封裝： | ROHS COMPLIANT |
| 文件頁數(shù)： | 13/14頁 |
| 文件大小： | 293K |
| 代理商： | 44H90-12-1-04N |
Grayhill, Inc. 561 Hillgrove Avenue LaGrange, Illinois
60525-5997 USA Phone: 708-354-1040 Fax: 708-354-2820 www.grayhill.com
Rotary
Switches
Multi-Deck Rotary Switches
SPECIFICATIONS:
MIL-S-3786 Electrical Values
Military Style
Style M switches, at 85°C, approximately
68% humidity and sea level pressure and
style H and HS at 125°C have been tested to
make and break the following loads as stated
in MIL-S-3786/SR04; 250 milliamperes at 28
Vdc resistive, 100 milliamperes at 28 Vdc
inductive (2.8 henries); 75 milliamperes at
115 Vac resistive.
These switches have also been tested at
reduced barometric pressure (70,000 feet),
25°C at approximately 68% relative humidity
to make and break the following loads as
stated in MIL-S-3786/SR04; 200 milliamperes,
28 Vdc resistive; 25 milliamperes, 28 Vdc
inductive (2.8 henries); 20 milliamperes, 115
Vac resistive. When tested to these loads
and conditions the style M, H and HS switches
meet the following life limiting or failure criteria
after 25,000 cycles in accordance with MIL-
S-3786.
Contact Resistance: 50 milliohms maximum
Insulation Resistance: 1,000 megaohms
minimum between terminals and shafts
Dielectric Strength: 1,000 Vac (atmospheric
pressure) and 450 Vac (reduced pressure)
minimum between mutually insulated parts.
When tested at sea level 25°C and 68%
relative humidity with failure criteria of 50
milliohms max. and 750 Vac breakdown
voltage, these switches will make and break
the following loads: 250 mA at 28 Vdc,
inductive (2.8 henries); 1.25 amps at 28 Vdc
resistive; 2.0 amps at 115 Vac, 60 Hz resistive,
for 10,000 cycles.
These switches also meet MIL-S-3786/SR04
for moisture resistance, medium and high
shock, vibration (10 to 2000 cps), thermal
shock (-65°C to 125°C), salt spray, explosion
and terminal pull.
Materials and Finishes
Standard Style
Bases: Melamine per (MIL-M-14) ASTM-D-
5948
Cover, Deck Separators, End Plate and Rotor
Mounting Plate: Phenolic per (MIL-M-14)
ASTM-D-5948
Mounting Bushings, Lockwashers and Nuts:
Brass, cadmium-plated per QQ-P-416, Class
2, Type II
Shaft, Cover Plate, Retaining Rings,
Through Bolts, Shaft Extensions, Stop Arm,
Thrust Washers Stop Washers and Rear
Support Plate: Stainless Steel
Detent Balls: Steel, nickel-plated
Detent Springs: Tinned music wire
Rotor Contact, Stator (Base) Contacts: Silver
alloy
Terminals (Except Common): Brass, lead-
tin plated and fused
Common Plate, Including Solder Lug: Brass,
silver-plated .0003" minimum
Mounting Hardware: Two mounting nuts .094"
(2,39) thick by .562" (14,27) across flats and
one internal tooth lockwasher are supplied
with each switch.
Materials and Finishes
Military Qualified
Bases: Diallyl per (MIL-M-14) ASTM-D-5948
Cover, Deck Separators, End Plate and Rotor
Mounting Plate: Diallyl per (MIL-M-14) ASTM-
D-5948
Mounting Bushings , Lockwasher and
Nuts: Brass, cadmium-plated per QQ-P-416,
Class 2, Type II
Shaft, Cover Plate, Retaining Rings,
Through Bolts, Shaft Extensions, Stop
Arm, Stop Washers, Thrust Washers and
Rear Support Plate: Stainless steel
Detent Balls: Steel, nickel-plated
Detent Springs: Tinned music wire
Rotor Contact: Silver alloy
Terminals, Common Plate including
Solder Lug: Brass, silver-plated .0003"
minimum
Mounting Hardware: Two mounting nuts
.094" thick by .562" across flats and one
internal tooth lockwasher are supplied with
each switch.
Additional Characteristics
Standard Style and Military Qualified
Contact: Shorting or non-shorting wiping
contacts with over 150 grams of contact
force
Rotational Torque: 8-115 ounce-inches
depending upon the number of poles per
deck, number of decks and angle of throw
Mechanical Life Expectancy: 100,000
cycles of operation
Shaft Flat Orientation: Flat opposite
contacting position of pole number one (See
circuit diagram).
Stop Strength: For Standard style: 15 pound-
inches minimum. For Adjustable stop styles:
12 pound-inches
Extended Stud: Single shaft switches of six
or more decks and concentric shaft switches
of a combination of five or more decks
(Standard style) or four or more decks (Military
style) have longer studs with extra mounting
nuts for recommended double end mount.
J-58
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