Name: Epha Limit Switches
SKU: 4484
Price: 3000.00 INR
Availability: InStock

GENERAL INFORMATION

JAI EPHA switches feature the smallest housing available in India for use in hazardous location. Flame paths within the housing cool exploading gases below the kinding temperature before they reach to explosive gases surroundings the housing.

SEALS

Application proven heavy duty limit switch head seals are retained to seal the top of the JAI EPHA. The circular cover on the front is easily unscrewed to expose switching elements for wiring or replacement. A screw driver or bar used on the wrenching lugs extending from the front of the cover allows easy removal or tightening. An ‘O’ ring the seal is located between the housing and cover, flame paths are provided by the cover housing threads and on extended plunger between the switch cavity and head.

INTERCHANGEABILITY

JAI EPHA flame proof limit switches are interchangeable with any standard heavy duty limit switch with a adpter plate.

JAI EPHA has a recessed back into which the adapter plate fits and mounts using two switch.

JAI EPHA MODELS

JAI EPHA type limit switches are available with a variety of operating heads to meet diverse applications.

ROTARY LEVEL OPERATING HEADS

They are available in spring return and maintained type. They rotary shaft can be readily change to operate clockwise, counter clockwise or both. The operating levers may be rotated and locked in any position through 360D. The operating heads can be positioned in any of the four sides. The lever rollers or 19mm diameter and 8mm width. The levers are available fixed and adjustable lengths.

TOP PUSH OPERATING HEADS

They are available in two designs. One has an adjustable push button, the length of which can be adjusted upto 8mm. (Adjustment is accomplished by turning the threaded hexagon head, operating plunger and securing it with a lock nut). The second type has a roller of 11.1mm dia. The top push roller is easier to apply because the direction of operating and repeat accuracy is less critical.

SIDE PUSH OPERATING HEADS

These Heads are also available with an adjustable push button alternatively a roller of 11.1 mm dia. These are designed for small space and lower travel application when the actuator travel is perpendicular to the switch.

CABLE ENTRY

Cable entry available either in ½” NPTor ¾”NPT or 1/2 “ BSPT

SELECTION CHART

Description	Type	Ordering Code
Roller Lever	38 mm length 76 mm length 50 mm length 64 mm length 50 mm length	EPHA – 1* EPHA – 2* EPHA – 3* EPHA – 4* EPHA – 0*
Adjustable Roller Lever	47 to 75 mm	EPHA – A*
Antina type lever	134 mm length	EPHA – JW*
Fork Lever	Roller in line with Offset roller	EPHA – F* EPHA – FO*
Top Push	Roller type button type	EPHA – TPR EPHA – TPBA
Side Push	Roller type button type	EPHA – SPR EPHA – SPBA

* Also available with maintain contact, add M as suffix to code while ordering

DIMENSION (MM)

OPERATING DATA

Models	EPHA 1 EPHA 2 EPHA 3 EPHA 4 EPHA 0 EPHA F EPHA FO EPHA A EPHA JW	EPHA 1M EPHA 2M EPHA 3M EPHA 4M EPHA 0M EPHA FM EPHA FOM EPHA AM EPHA JWM	EPHA TPR EPHA TPBA (mm)	EPHA SPR EPHA SPBA (mm)
Travel to Trip A Travel to reset from trip point B Overtravel C Total Travel D Force to trip (max) kg Operating Torque (max) kgfm	10 ° 6 ° 60 ° 70 ° – 0.046	50° + 50° + 40°*. 90° + – 0.02	1.3 + 1.1 5.7 7.0 2.0 –	2.0+ 1.7 5.0 7.0 2.0 –

+ Maximum * Minimum

CHARACTERISTICS

Contact Material	:	Silver
Electrical Data Maximum available	:	10A-120, 240, 480 or 600 V AC
Performance	:	As per 1EC 947-5-1 18193/pt 5/ Sec 1 of 1993
Temperature Range	:	– 12* C to 121* C
Sealing	:	IS : 2147 & IS : 2148
Housing Material	:	Aluminum
Frequency of Operation	:	2500 operations per hour
Mechanical life	:	10 x 10⁶ Operations
Enclosure Category	:	1.5mm SQ
Weight	:	700 gms. approx