Mors Smitt High performance Plug-In Relays for Power Market
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MorsSmitt Industrial Technology High performance plug-in relays

Power generation and distribution operators across the world rely on our relays

Product range D-relays series The unique plug-in D-relay concept is specifically designed for heavy duty applications in power utilities, petro chemical industries and mining. High DC breaking capacity and inductive load switching offer long electrical life and low life cycle costs. The Solve-All relay application concept offers ultimate flexibility to design and supply tailor made D-relays. Today D-relays are used in millions across the world. Instantaneous auxiliary and trip relays Direct switching power relays designed for heavy duty applications in demanding markets. The instantaneous...

Technical details Features D-relays • • • • • • Mechanical trip indicator Bistable / latching models Fast switching ip to < 7 ms High DC breaking capacity Low power consumption Optional time functions Reset / type Voltage range Transient overvoltage Operating burden Operating voltage Operating time Self reset relays < 5 W Reset coils = 0 W Self reset During pull-in 25 W Continuous 1 W High speed tripping relays D-R Self reset Bistable / latching remote relays BD KDN Electrical reset During pull-in 1.7 W / 4 VA Reset coils = 0 W 0.7 W - 1.2 W Pick-up timing * See our website for more types...

Options The D-relays (and derived models) can be equipped with options mentioned below. This Solve-All relay concept allows the D-relay to be composed to a solution for almost any application. Options* Function Specification A Mechanical hand reset flag B Heavy duty contacts, magnetic arc blow-out 7 A, DC1 @ 110 V H High burden 10 µF, 1.5 Un S Mechanical following flag T Test button V Wide operating and temperature range 70 % ...125 % Unom / -25 oC...+70 oC * Not all options can be combined, see our website for more details and options Flush mounting Screw terminals Spring clamp terminals...

Instantaneous auxiliary relay 10 A, 4 C/O Trip and control applications, switching of AC & DC voltages, resistive and inductive loads. • • • • • • • • Connection diagram Contact specifications Plug-in 4 C/O contacts DC (with back EMF diode) and AC coil LED indicator (standard) Cadmium free contacts HD contacts optional Trip indicator optional Following flag optional Contact material Ag Number & configuration 4 C/O Rated continuous current 10 A Breaking capacity AC 1 10 A / 230 V Breaking capacity DC 1 1 A / 110 V Max. make current 16 A Max. switching voltage 350 VDC / 440 VAC Min. switched...

Fast trip relay 10 A, 3 C/O Trip applications, switching of AC & DC voltages, resistive and inductive loads. • • • • • • • • Contact specifications Plug-in 3 C/O contacts Cadmium free contacts ‘Smitt-style’ pinning with integrated retaining silver plated clip Fast switching <7 ms (for DC only) (option R, standard) HD contacts optional Trip indicator optional Following flag optional Contact material Ag Number & configuration 3 C/O Rated continuous current 10 A Breaking capacity AC1 10 A / 230 V Breaking capacity DC1 1 A / 110 V Max. make current 16 A Max. switching voltage 350 VDC Min....

Instantaneous auxiliary relay 10 A, 8 C/O Heavy duty applications, switching of AC & DC voltages, resistive and inductive loads. • • • • • • • • Plug-in 8 C/O contacts AC/DC coil voltage (rectifier bridge, option U, standard) Coil is suitable for AC/DC voltage LED indicator (option L, standard) Cadmium free contacts HD contacts optional Trip indicator optional Contact material Ag Number & configuration 8 C/O Rated continuous current 10 A Breaking capacity AC1 10 A / 230 V Breaking capacity DC1 1 A / 110 V Max. make current 16A Max. switching voltage 350 V DC / 440 VAC Min. switched voltage...

Fast trip relay 10 A, 7 C/O Heavy duty applications, switching of AC & DC voltages, resistive and inductive loads. • • • • • • • • Connection diagram Plug-in 8 C/O contacts AC/DC coil voltage (rectifier bridge, option U, standard) Coil is suitable for AC/DC voltage LED indicator (option L, standard) Cadmium free contacts HD contacts optional Trip indicator optional Contact specifications Contact material Ag Number & configuration 8 C/O Rated continuous current 10 A Breaking capacity AC1 10 A / 230 V Breaking capacity DC1 1 A / 110 V Max. make current 16A Max. switching voltage 350 VDC Min....

Bistable / latching Heavy duty applications, switching of AC & DC voltages, resistive and inductive loads. • • • • • • Plug-in 3 C/O + 1 N/C contacts DC and AC coil Cadmium free contacts Puls activated resolving in less heat dissipation and energy consumption Continuous coil energization permitted Contact specifications Contact material Ag Number & configuration 3 C/O + 1 N/C Rated continuous current 10 A Breaking capacity AC1 10 A / 230 V Breaking capacity DC1 1 A / 110 V Max. make current 16 A Max. switching voltage 250 VDC / 440 VAC Min. switched voltage 12 V Min. switched current 10 mA...

Bistable / latching Heavy duty applications, switching of AC & DC voltages, resistive and inductive loads. • • • • • • Plug-in 8 C/O contacts DC and AC coil Cadmium free contacts Position indicator (red/green) Continuous coil energization permitted Contact specifications Contact material Ag Number & configuration 8 C/O Rated continuous current 10 A Breaking capacity AC1 10 A / 230 V Breaking capacity DC1 1 A / 110 V Max. make current 16 A Max. switching voltage 350 VDC / 440 VAC Min. switched voltage 12 V Min. switched current 10 mA (Au, 1 μV, 1 μA) Peak inrush current 200 A for 10 ms, 40 A...

Latching / bistable Pulse activated applications, resolving in less heat dissipation and energy consumption. • • • • • • • • Plug-in 2 C/O contacts DC and AC coil Flash barriers Weld no transfer contacts Cadmium free contacts ‘Smitt-style’ pinning with integrated retaining silver plated clip Contious coil energisation permitted Contact material Number & configuration Rated continuous current Breaking capacity AC1 Breaking capacity DC1 Max. make current Max. switching voltage Min. switched voltage Min. switched current Coil specifications Nominal voltage (Un DC) Power consumption (DC / AC)...