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| Breaker Control Switches |
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RECOM RBC Control Switches are essentially recommended for use in variety of industrial applications like (a) Control of TRIP/CLOSE circuits in Circuit Breakers (b) CONTROL operations in Machine Tools and (c) Switching of control/instrumentation circuits in Switchgear, Controller, Relay Panel and other machinery. Equipment /plants for steel, textile, process control, cement, paper, chemicals, fertilizers, shipbuilding, railways, mining etc. Versatile design of these switches make possible a wide vanety of switching arrangements to suit specific programme specification requirements. These Control Switches are improved/new version and incorporate internationally accepted design of Cam Operated silver-alloy Butt contacts with double-break feature, dust protected and assembled on packet principle (stacking type and manually operated by a pistol grip handle through a sturdy mechanism. |
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| ELECTRICAL DATA / SPECIFICATION |
| RBC Control Switches |
RBC 16 |
RBC 20 |
RBC 25 |
RBC 32 |
RBC 40 |
RBC 50 |
| Current Amps. Ith (Thermal) |
16 |
20 |
25 |
32 |
40 |
50 |
| Current Amps Continuous |
12 |
16 |
20 |
25 |
32 |
40 |
| Voltage Operational A. C. & D. C. |
660 |
660 |
660 |
660 |
660 |
660 |
| High Voltage Test |
2.5KV |
2.5KV |
2.5KV |
2.5KV |
2.5KV |
2.5KV |
|
r. m. s. |
r. m. s. |
r. m. s. |
r. m. s. |
r. m. s. |
r. m. s. |
| Frequency of Operation |
200 |
200 |
200 |
200 |
200 |
200 |
| Switching cycles per hour (max) |
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| Temperature conditions ambient 55 |
55 |
55 |
55 |
55 |
55 |
55 |
| degree centre (max.) |
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| Breaking Capacity A. C. at 440V 0.3 pf. lag |
(Over 50,000 Operations) |
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| Breaking Capacity D. C. per single cell. As per Table given below : |
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| B R E A K I N G C A P A C I T Y I N A M P S |
| Volt. |
(RBC) ResistiveCurrent in Amps. |
(RBC) Inductive Current in Amps. |
| D. C. |
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10 m. s. TC |
20 m. s. TC |
40 m. s. TC |
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16 |
20 |
25 |
32 |
40 |
50 |
16 |
20 |
25 |
32 |
40 |
50 |
16 |
20 |
25 |
32 |
40 |
50 |
16 |
20 |
25 |
32 |
40 |
50 |
| 50 |
10 |
15 |
20 |
25 |
32 |
40 |
5 |
10 |
15 |
20 |
25 |
30 |
2.5 |
5.0 |
15 |
17.5 |
20 |
25 |
1.5 |
3.0 |
4.0 |
6.0 |
7.5 |
10 |
| 125 |
1.5 |
2.0 |
2.5 |
3.0 |
4.0 |
5.0 |
0.5 |
1.0 |
2.0 |
3.0 |
4.0 |
5.0 |
0.35 |
0.5 |
1.0 |
2.0 |
3.0 |
5.0 |
0.15 |
0.35 |
0.5 |
0.75 |
1.5 |
2.0 |
| 250 |
0.75 |
1.0 |
1.5 |
2.0 |
2.5 |
3.0 |
0.25 |
0.5 |
1.0 |
1.5 |
2.0 |
2.5 |
0.15 |
0.3 |
0.75 |
1.0 |
1.5 |
2.0 |
0.15 |
0.25 |
0.35 |
0.50 |
0.65 |
0.75 |
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For Breaking Higher D. C. at different Time Constants at above voltages Switches are assembled with TWO or more contacts in series A maximum of two contacts in series in recommended.
MOUNTING :
RBC Control Switches are manufactured in open execution and suitable for mounting on a
panel of thickness upto 4mm.
- At 4 corner holes with 4 Screws of size M4.5 at 49.5 CRS (70mm PCD) for Breaker
application for 25, 32, 40 and 50A Switches.
- At 4 corner holes with 4 Screws of size M5 at 60CRS for other applications for 25, 32,
40 and 50A Switches
- At 4 corner holes with M3.5 screws at 36PCD for 16 and 20A switches
DUST PROTECTION :
Because of contact / housing design for dust protection, control switches are ideally recommended for use in power station locations / industrial applications.
COMPONENT SPECIFICATIONS :
Control switch is an assembly of component parts viz.
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Packets - Moulded from Glass Filled Nylon wich is an engineerning thermoplastic material having excellent properties like - high insulation, anti-tracking, self extinguishing, fire retardant and impact/fracture proof.
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Mechanism Housing - The mechanism housing is also moulded from same material as switching packets and contain other parts which provide indexing positions.
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Contact/Terminals - Fixed and moving contact parts are of brass (electrical grade) suitably electroplated on which Bimetal Button contacts Silver-Alloy (Silver Cadmium Oxide-Ag Cd O) are rivetted for make break operations. Each packet contains two electrically independent contacts. The outside ends of the fixed contacts are recessed type designed for connections by means of M3.5 or M4 size panhead screw and clamped tight by arched spring washers. Terminals are suitable to carry wires upto 4mm sw. or 4mm crimped terminals.
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Cams - These are moulded from engineering plastic and variety of standard Cam profiles are available to satisfy standard as well as any odd switching combination.
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Contact Springs - Each moving contact is assisted by a part of springs of stainless steel to provide uniform contact pressure ensuring higher contact life.
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Other Parts - Above components are assembled by means of suitable hardware and fitted with mounting plate. The indexing mechanism and Cams in the contact assembly are operated by a steel shaft with a suitable handle.
ORDERING 'RBC' SWITCHES :
Considering the variables in this range, it is necessary to provide complete information with your inquiry/order, preferably in 'Switch Order Sheet' available on request, for expeditious handling. The essential information required is :
- Breaking current
- Voltage
- AC or DC System
- L/R Ratio or Time Constant
- Type of Load
- Switching Sequence in each of the position Control/Selector Switches and for Breaker Control Switches in Trip-Neutral-Close and Lost Motion Contacts and Sequence Locking Device.
- No. of Positions
- Indexing Degree
- Mounting
- Type of Handle
- Extra features-Locks and locking positions.
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| Front View : |
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| © Copyright 2007, Recom Pvt. Ltd. All rights reserved. |
Designed & Maintained by : Aakrutee |
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