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Precision Limit Switches



JO1 JO2

JAIBALAJI Precision Limit Switches are designed for industrial duty applications. They are small in size, reliable in operation, have exceptionally long life and are accurate. The wide variety of switch operating mechanisms coupled with the choice of either single pole 1NO + 1NC or double pole 2NO+2NC changeover contacts permit easy selection and application for many needs. BALAJI & CO Precision Limit Switches are designed

Contact Mechanism

The contact mechanism incorporates a moveable contact assembly utilising two pressed leap springs to provide quick-make, quick-break action which eliminates any position of zero contact pressure and ensures non-teasing action, even with an extremely slow operation motion. 

The light weight berrylium-copper contact carrier with large faced silver contacts and low bounce mechanisms assure long life on high load applications. The serrated silver stationery contacts, definite wiping action and high contact pressure assure reliability on dry circuit applications. The switch is completely enclosed in a semi dust-tight moulded, phenolic case of great physical strength and high arc-resisting capacity. weight berrylium-copper contact carrier with large faced silver 

Versatile 

A wide variety of operations is available for use in combination with the basic switch. These operators with individual mounting variations, afford a high degree of versatility.

Push button plunger 

These are designed for one hole panel mounting. The plunger mechanisms is of oil-tight construction and prevents any ingress of oil, including coolant. These operators are designed for an inline actuating motion with controlled over-travel. 

Roller plunger 

Operators are designed for one hole mounting and are of oil-tight construction. The roller plunger comes assembled either in line with the length of the contact block or at right angles to it. This allows the roller to accept cam or slide operation from any of the four directions. 

Six inch (150 mm) lever 

Operators provide either top and right hand mounting or top and left hand mounting. With this do-it-yourself operator, the lever may be formed by the user to satisfy unusual requirements and can be cut or bent to any desired length or shape. 

Roller lever

Operators are available with either top and right hand mounting or top and left hand mounting and are equipped-with a steel roller which may be operated by a cam or some similar actuating device. Operation is provided in both directions. 

Electrical and mechanical ratings
Utilisation Category : AC 15 and DC 13 as per IEC 947 - 5 - 1
and IS : 13947 / Pt 5 / Sec 1
Thermal current (1 th) : 15A
Insulation Voltage (UI) : 600 V AC
Operational current and voltage
AC11 rating Single pole
(1NO + 1NC
changeover contacts)
Double pole
(2NO + 2NC
changeover contacts)
110V
240V
440V
600V
4A
2A
1A
0.8A
3.0A
1.5A
0.8A
0.6A
DC11 rating Single
throw
Double
throw
Single
throw
Double
throw
115V
230V
600V
2.0A
0.5A
0.1A
0.5A
0.2A
0.02A
1.0A
0.3A
0.1A
0.2A
0.1A
-
Contact
combination:
Single pole 1 NO + 1 NC changeover contacts
Double pole 2 NO + 2 NC changeover contacts
Frequency of
operation:
2500 operations per hour (max)
Mechanical and
electrical life:
20x10 operations without operator
10x10 operations with operator
Operating
force:
0.595 kg (max)
0.387 kg (min)
Terminal
capacity:
2.5 mm solid or stranded conductors
Operating Data

The repeat accuracy of individual switch trip points is such that after millions of operations they do not drift more than two or three thousands of an inch.
Selection chart
Description Models
Precision switch without operator with 1 NO + 1 NC contacts JO1
Precision switch without operator with 2 NO + 2 NC contacts JO2
Precision switch with top push button operator with 1NO + 1 NC contacts JO1TPB*
Precision switch with top push roller operator assembled in line with contact lock with 1 NO + 1 NC contacts JO1TPRA*
Precision switch with six inch lever operator (right hand mounting) with 1 NO + 1 NC contacts JO1SILR*
Precision switch with six inch lever operator (left hand mounting) with 1NO + 1 NC contacts JO1SILL*
Precision switch with roller lever operator (right hand mounting) with 1 NO + 1 NC contacts JO1RLR*
Precision switch with roller lever operator (left hand mounting) with 1NO +1 NC contacts JO1RLL*
*For switches with 2 NO + 2 NC contact block, add suffix JO2 to the catalogue code.
Spares
Operator Assembly Models
Top push button
Top push roller assembled in line with contact block
To push roller assembled at right angle to contact block
Roller lever, right hand mounting
Roller lever, left hand mounting
Six inch lever, right hand mounting
Six inch lever, left hand mounting
JO TPB
JO TPRA
JO TPRB
JO RLR
JO RLL
JO SILR
JO SILL
Dimensions (mm)
金沙jnh最新线路