T4N-4131 Safety Limit Switch

■ Forced open action device(NC contacts only), it can disconnect the contact
when the contact has fusing and other failures.
■ Standardized gold-clad contacts provide high contact reliability, Can be
used with both standard loads and microloads.
■ Strengthened top seal structure improves the sealing performance.
■ Built-in contact holder has fast-action type: 1NC/1NO; Slow-action: 1NC
/1NO and 2NC.

Characteristics
Protection level*1 IP66
Life*2 Electrical More than 300,000 times (AC250V 10A, resistive load)

Electrical More than 500,000 times (AC250V 3A, resistive load) *3
Operating speed 1 ～ 500mm/s(T4N-4120)
Operating frequency Max. 30 times/min
Contact resistance 25 mΩ or less
Minimum working load *4 1mA resistive load below DC5V (N standard reference
value)
Rated insulation voltage (Ui) 300V
Electric shock proof protection grade Class II (double insulated)
Pollution degree (environmental conditions) Pollution degree 3 (EN60947-5-
1)
Withstand voltage
(EN60947-5-1) Between homopolar terminals: 2.5kV
Between heteropolar terminals: 2.5kV
Between terminals and uncharged metal parts: 6kV
insulation resistance Above 100MΩ
Contact gap Minimum 2×0.5mm quick-action type,
Minimum 2×2mm slow-action type
Vibration Malfunction 10 ～ 55Hz 0.75mm single amplitude
Impact Duration 1,000m/s2
Malfunction 300m/s2
Ambient temperature -20 ～ +70℃ (No ice or dew)
Ambient humidity Less than 95% RH
Weight About 73g (T4N-4120)
About 82g (T4N-4120 with gland)

Note1:The above values are initial values.
Note2:Once the contact is connected to a standard load, it can not be used to
connect a smaller load. If so, the contact may result in rough surface, thus
losing contact reliability.
①The protection level is gotten based on test method of (EN60947-5-1). Please
make sure its sealing under actual environmental conditions before use. The
switch box has dust and oil resistance structure, but it should be used in
places without dust, oil and chemicals.
Otherwise it may lead to premature wear, damage or malfunction.
②The durability is for ambient temperature of 5℃ ~ 35℃ and humidity of 40%
to 70% RH.
③For additional details, please contact us.
④When the ambient temperature is above 35℃ , more than 2 circuits 3A 250VAC
loads are prohibited.
⑤The values will vary with different switching frequency, environmental
conditions, reliability level and other factors. Please confirm on the actual
load in advance.
The mechanical life of deadman lever type is more than 10,000,000 times.

Safety Limit Switch Model Designations
Item Code Description
① Conduit / connector size 1 Pg13.5 (1 conduit type)
2 G1/2 (1 conduit type)
4 M20 (1 conduit type)
5 Pg13.5 (2 conduits type)
6 G1/2 (2 conduits type)
8 M20 (2 conduits type)
② Built-in switch 1 1NC/1NO (quick-action type)
2 2NC (quick-action type)
A 1NC/1NO (slow-action type)
B 2NC (slow-action type)
③Head and driving rod 20 Roller lever (resin lever, resin ball)
22 Roller lever (metal lever, resin ball)
25 Roller lever (metal lever, metal resin ball)
2G Adjustable roller lever, Form Lock (metal lever, resin ball)
2H Adjustable roller lever, Form Lock (metal lever, rubber ball)
2M Adjustable roller lever, Form Lock (metal lever, metal resin
ball)
31 Top plunger type
32 Top plunger ball type
62 Unilateral cantilever ball type (horizontal)
72 Unilateral cantilever ball type (vertical)
80 Whisker type
87 Plastic stick type

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