Ls-311 Roller Plunger Snap Action Electrical Travel Limit Switch for Tower Crane

• Customization: Available
• Structure: Working Limit Switch
• Type: Explosion-Proof Limit Switch
• Model NO.: LS-311
• Certification: RoHS, CE, ISO, CCC
• Switching Element: Speed Switch
• Application: Mining
• Contactless Type: Reed Switch
• Contact: Contact
• Max. Current: 10A
• Operation Speed: 0.5mm-50cm/Sec
• Max. Voltage: 10A 250VAC, 6A 380VAC
• Material: Intensive Plastic and Zinc Cast
• Degree of Protection: IP66
• Transport Package: Packing by Carton
• Specification: 10pcs/inner box, 100pcs/master box, 19kgs/ctn
• Trademark: ann
• Origin: Wenzhou
• Production Capacity: 50000PCS/Year

Product Description

LS-311 Roller Plunger Snap Action Electrical Travel Limit Switch for Tower Crane 10A 380V

 









 

Features:

Economic plastic outer shell,strong structure and high mechanical strength.

Preventing oil and water.

Double way switch, double spring inner switch.

Variety of levers.

Widely used in Mechanical equipment,automatic machine,and instrument,electro motion tool etc.
 

Product Parameters

Operation speed	5mm-0.5m/s
Operating frequency	Electical: 30 operations/min
Contact rsistance	25mΩ max. (initial value)
Insulation resistance	100mΩ min. (below 500VDC)
Dielectric strength	1000VAC, 50/60 Hz for 1 minute between current-carrying and non-current-carrying metal parts
	1500VAC, 50/60 Hz for 1 minute between current-carrying and non-current-carrying metal parts
	1500VAC, 50/60 Hz for 1 minute between each terminal and ground
Vibration	10~55Hz,1.5mm double amplitude
Shock	Mechanical durable: 1,000m/Sec² (about 100G'S) Malfunction: 300m/Sec² (about 30G'S)
Ambient temperature	Using: -20~+70ºC (With no icing)
Humidity	<95% RH
Electrical life	500,000 operations above
Protection level	IP66

NOTES: The default size of conduit connector is M20x1.5, outfiting cable connector. Conduit connector size is PG13.5, with product model number plus (-P), example:LS-103-P.
 

 

Model	LS	131 331	161 361	171 371	181 381	191 391
Operationg force	OF(Max.)	500g-cm	100g	100g	100g	500g-cm
Release force	RF(Min.)	100g-cm	40g	40g	40g	100g-cm
Pre-travel	PT(Max.)	20°	30mm	30mm	30mm	20°
Tripping position	TP±10%	22.5°	22.5 °	22.5°	22.5°	22.5°
Movement differential	MD(Max.)	10°	14°	14degree	14degree	10°
Over travel	OT(Min.)	75°	20mm	20mm	20mm	75°
Total travel	TT(Min.)	95°	50mm	50mm	50mm	95°
Rotary indexing		22.5°				22.5°

 

 

Model	LS	101 301	103 303	111 311	121 321	127 327
Operationg force	OF(Max.)	700g	700g	700g	500g	700g
Release force	RF(Min.)	200g	200g	200g	100g-cm	200g
Pre-travel	PT(Max.)	1.8mm	1.8mm	1.8mm	20°	1.8mm
Tripping position	TP±10%	2.0mm	2.0mm	2.0mm	22.5°	2.0mm
Movement differential	MD(Max.)	1.2mm	1.2mm	1.2mm	10°	1.2mm
Over travel	OT(Min.)	4.0mm	4.0mm	4.0mm	75°	4.0mm
Total travel	TT(Min.)	5.8mm	5.8mm	5.8mm	95°	5.8mm
Rotary indexing					22.5°