E-T-A Circuit Breakers Ltd

The SVS09 power distribution system with integral signalling module optimises DC 24 V distribution at the machine-oriented field level in automated process control, production plants and power plants. Offering 10-plug-in sockets for electronic and thermal-magnetic circuit breakers and an integrated alarm handling function for single and group signalisation, the SVS09 distribution board can be cascaded on the master-slave principle to meet specific requirements. This cascading allows transducers, actuators, valves, distributed PLCs, intelligent terminals etc. to be clustered into distinct function groups and to be conveniently incorporated into the plant's overall alarm monitoring scheme. Particularly for applications with a great number of sensors/actuators, the SVS09 offers possibilities for cost- and space-saving in the design of control cabinets.

Each load circuit that is interrupted by an overload or short circuit trip always generates a single alarm. In addition, a group alarm for the entire SVS09 cascade is induced which will be acknowledged by means of a command element (momentary switch, relay, PLC) either locally in the control cabinet or remotely in the control room. Acknowledging the group alarm immediately reactivates the group signalling function of the SVS09 cascade remobilising it for new incoming short-circuit or overload messages.

The power distribution system SVS09 is mounted on a symmetrical rail and accommodates 10 electronic or thermal-magnetic circuit breakers. All terminals (line entry DC +24 V, GND (-) for self-supply, load outputs L(+), signalling and acknowledgment) are spring-loaded terminals.

The power distribution system SVS14-10 optimises DC 24 V distribution on the field level in automated process control, industrial production and chemical plants. The system holds an integral ammeter (display 25 A) for the total current and offers ten ways for electronic and thermal-magnetic circuit breakers including group signalling. It allows protection of transformers, actuators, solenoids, peripheral PLCs, intelligent terminals etc. on the field level. Particularly for systems with a great number of sensors/actuators the SVS14 power distribution system enables a space-saving and cost-effective design of protection control cabinets.

Any load circuit which might be disconnected due to overload or short circuit generates a single signal which will be summarised in a group signal directly on the power distribution system and which will be fed back directly to control.

The SVS14 is a track-mountable system and accommodates 10 electronic or thermal-magnetic circuit breakers. All terminals (entry line DC +24 V, GND (-) for self-supply, load outputs L(+) and group signalling are standard screw terminals.

The power distribution system SVS16-PB-XX provides selective overcurrent protection, power distribution in load circuits as well as switching and resetting of outputs.

For integral consistent communication of operating and error conditions as well as switching and resetting of individual circuits on the DC 24 V level, the system is fitted with a fully featured PROFIBUS-DP interface.

The track-mountable system has 8 (SVS16-PB-08) or 16 (SVS16-PB-16) slots and accommodates electronic circuit breakers type ESX10-125 (with reset input and status output) and ESX10-115 (with control input and status output) or the solid state remote power controller E-1048-7xx (with control input and status output).

The power distribution system SVS20 for rail mounting distributes the current supplied by a DC 24 V switch-mode power supply to 8 channels and selectively protects the connected loads by means of the inserted circuit breakers. With a max. load current of 8 A per channel and a max. total current of 40 A the SVS20 provides ease of wiring in short-circuit limited DC 24 V applications. Eight protected "L+" load outputs per channel and 35 minus terminals help to reduce wiring time significantly.

Modular distribution rail, each module accommodating 2 magnetic or hydraulic-magnetic circuit breakers type 8340-F and associated load terminals. Circuit breaker status indication (group signalisation) is via 2 busbars. Power supply is via right- or left-side terminal block. Live parts in the plug-in and supply feed terminal areas are protected against brush contact. Circuit breakers may be replaced with power on.

Distribution rail for one module suitable for ETSI control cabinet and similar applications. One module comprises 4 positions for magnetic or hydraulic-magnetic circuit breakers type 8340-F and associated line and load terminals. Circuit breaker status indication (group signalisation) is via two busbars. The modular design facilitates the operation of a single distribution rail at two different voltages.

Live parts in the plug-in and supply feed terminal areas are protected against brush contact.

Expansion or circuit breaker replacement is possible with power on.

Distribution rail with modules connected in series. One module provides 4 positions for magnetic or magnetic-hydraulic circuit breakers type 8340-F and the pertinent line and load terminals on the front and rear side of the rail. Supply feed is either on the right or left side with copper busbars. Trip indication of the circuit breakers (group signalisation) is possible via two signal busbars. Live parts in the plug-in area of the load terminals are protected against brush contact. Circuit breaker replacement is possible with power on.

Distribution rail comprising series connected circuit breaker mounting modules. Each module accommodates one magnetic or magnetic-hydraulic circuit breaker type 8345 and the associated line and load terminals on the rear side of the rail. Supply feed is either on the right or left side with copper busbars. Trip indication of the circuit breakers (group signalisation) is possible via two signal busbars.

Live parts in the plug-in area of the load terminals are protected against brush contact (IP20). Replacement of circuit breakers (switched off) is possible with power on.

The SSRPC E-1072-128 fully complies with the requirements of the EC Machinery Directive or EN 60204 part 1 »Safety of Machinery - Electrical Equipment of Machines« in systems with ungrounded power supply (»IT system«).

The E-1072-128 is a double pole solid state remote power controller for electromagnetic valves (solenoids), magnetic brakes and clutches with a rated voltage of DC 24 V and a max. current rating of 3 A. Besides a genuine circuit breaker function it offers additional diagnostic functions.

The SSRPC type E-1072-128 can be used as a replacement for the SSRPC version E-1071-128.

The Economy Power-D-Box® is a compact 2U power distribution system made of aluminium.