· Suffix code

Model Code Description
HY-M90 Limit switch (No operation indicator)
HY-LM90 Limit switch (Operation indicator attachment type)
Actuator
(operation part)
2   Roller Plunger Type
3   Ball Plunger Type
4   Roller Adjustable Lever Type
7   Adjustable Rod Wire Type
8   Roller Lever Type
8L   Fork Roller Lever
8R   Ø50 Roller Lever Type
9   Coil Spring Type
Operation indicator
classification
(HY-LM90)
  No operation indicator
A a.c indicator attachment type
D d.c indicator attachment type

* Operation indicator attachment type classification
• M900 series limit switch is generally composed of the product with operation indicator and without operation indicator.
Also divided into the a.c type and d.c type operation indicator.
• It can be used as an operation indicator just by changing the cover of limit switch.
It does not need the separate connection and it selects ON/OFF by rotating the holder 180 degree.

Voltage a.c operation indicator (250 V a.c) d.c operation indicator (24 V d.c)
Model HY-LM90A (a.c) HY-LM90D (d.c)
Indicator type Neon lamp L.E.D
Leakage current approx 1.2 ㎃ (250 V a.c) approx 1.0 ㎃ (24 V d.c)

Ratings
Rated voltage Rated electro current(A)
Resistive load Inductive load electric motor load
N.C N.O
a.c 125V 15 10 3 1.5
250V 10 6 2 1
480V 3 2 1.5 0.75
d.c 8V 15 10 - -
14V 15 10 - -
30V 6 5 - -
125V 0.4 0.05 - -
250V 0.2 0.03 - -
※ In case of electric magnetic coil and incandescent lamp load then it is same as the electric motor load.

· Specification

Model Roller plunger Top ball plunger Variable
roller lever
Variable ROD Roller lever Spring wire
M902/LM902 M903/LM903 M904/LM904 M907/LM907 M908/M908 M909/LM909
Appearance
Contact structure M4 screw tightening terminal, 2 circuits double type (1a1b)
Contact material AgNi
Protective structure IP67 (Only when using our company product HYC-M2 in the wire opening)
Operation indicator a.c : Neon lamp, d.c : LED (only with the HY-LM series)
Rated current(le) 6 A 250 V a.c (AC-15, DC-13)
Dielectric strength 2,000 V a.c 50/60 ㎐ for 1 min (between the terminal and non-recharing metal part)
Insulation resistance Min 100 ㏁ (500 V d.c insulated ohmmeter)
Contact resistance Max 50 mΩ (default value)
Rated voltage(Ue) 250 V a.c, 30 V d.c
Actuator intensity 5 times larger than O.F (force required to operate) 1min to the, operating direction
Vibration Double amplitude 1.5mm, frequency 10 ~ 55 ㎐, continuously 2 hour
Shock 1,000 ㎨ (durability), 300 ㎨ (malfunction)
Allowable operation speed 0.1 ~ 1 ㎧ (without damaging the actuator)
Life
expectancy
Mechanical Min 1million times (open/close frequency 120 times/min)
Electrical Min 300 thousand times (open/close frequency 20 times/min)
Ambient temperature -10 ~ 80 ℃
Ambient humidity 45 ~ 95 % R.H.
Weight Approx 350 g (included the box with HY-M904)