Instantaneous relays


Instantaneous relays

An Instantaneous Relay is one in which there is no time delay provided intentionally. As the current coil is an inductor, there would be a certain delay to reach the current in the coil to its maximum value.

There is also some time required for mechanical movement of the armature in the relay. These time delays are inherent in the instantaneous relay but no other time delay is intentionally added. These relays can be operated in less than 0.1 sec.

Time Chart

Instantaneous relay diagram   Contacts change instantaneously from non-working position to working position when its coil is energized; when the coil is de-energized the contacts are coming back instantaneously to the initial non-working position.
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Instantaneous relays

D-U200 instantaneous relay with 4 contacts

  • Compact plug-in design
  • Instantaneous, 4 CO contacts
  • Standard back EMF diode
  • Magnetic arc blow-out.
  • Flat, square silver plated relay pins for excellent socket connection
  • Wide range sockets
  • Integrated snap lock
  • Transparent cover
  • High DC breaking capacity
  • Flexibility by many options
  • Optional positive mechanical keying relay to socket
Instantaneous relays

303 relay - Safety critical, 19 contacts

  • Instantaneous relay
  • Plug-in design with secure locking feature for maximum ease of maintenance
  • 19 double break contacts in all N/O and N/C combinations
  • Weld no transfer safety contacts standard
  • Optional gold contacts
  • Optional gold bifurcated and silver contacts
  • Contact life (mechanical) of 100 million cycles
  • -40 °C...+80 °C operating temperature
Instantaneous relays

401 relay - Safety critical, 40 contacts

  • Instantaneous & safety critical relay
  • Plug-in design with secure locking feature for maximum ease of maintenance
  • 40 double break contacts in all N/O and N/C combinations
  • Weld no transfer safety contacts standard
  • Contact life (mechanical) of 100 million cycles
  • -40 °C...+80 °C operating temperature
Instantaneous relays

A 400 relay - 4 contacts

  • Instantaneous relay
  • Optional weld no transfer contacts for safety critical applications
  • Plug-in design with secure locking feature for maximum ease of maintenance
  • 4 double make / double break C/O contacts (form Z), 8 A
  • Contact life (mechanical) of 100 million cycles
  • -40 °C...+80 °C operating temperature
Instantaneous relays

AG 400 relay - Gold plated, 4 contacts

  • Instantaneous relay
  • Plug-in design with secure locking feature for maximum ease of maintenance
  • 4 double make / double break C/O contacts (form Z), gold plated on silver
  • Contact life (mechanical) of 100 million cycles
  • 40 °C...+80 °C operating temperature
  • Contacts cross pollution barrier
  • Optional weld no transfer function
Instantaneous relays

AK 400 safety relay

  • Instantaneous relay
  • Optional Weld no tranfer contacts for safety critical applications
  • Weld resistant
  • 4 double make - double break C/O contacts (form Z), 8 A
  • Plug-in design with secure locking feature for maximum ease of maintenance
  • Contact life (mechanical) of 100 million cycles
  • -40 °C...+80 °C operating temperature
Instantaneous relays

AM 400 relay - Mixed load, 4 contacts

  • Instantaneous relay
  • Plug-in design with secure locking feature for maximum ease of maintenance
  • 3 double make / double break C/O silver contacts (form Z)
  • 1 gold bifurcated C/O contact
  • Contact life (mechanical) of 100 million cycles
  • -40 °C...+80 °C operating temperature
  • Contacts cross pollution barrier
  • Optional weld no transfer function for silver contacts
Instantaneous relays

B 400 relay - Safety critical, 4 contacts

  • Instantaneous & safety critical relay
  • Plug-in design with secure locking feature for maximum ease of maintenance
  • 4 double make / double break C/O contacts (form Z), 12 A
  • Weld no transfer contacts standard
  • Contact life (mechanical) of 100 million cycles
  • -40 °C...+80 °C operating temperature
Instantaneous relays

BG 400 relay - 4 gold contacts

  • Instantaneous relay
  • Plug-in design with secure locking feature for maximum ease of maintenance
  • 4 double make / double break C/O contacts (form Z), gold plated on silver
  • Contact life (mechanical) of 100 million cycles
  • -40 °C...+80 °C operating temperature
  • Contacts cross pollution barrier
  • Weld no transfer function
Instantaneous relays

BK 400 safety relay

  • Instantaneous
  • Safety critical
  • Weld resistant
  • Weld no transfer safety contacts standard
  • Plug-in design with secure locking feature
  • 4 double make / double break C/O contacts (form Z), 12 A
  • Contact life (mechanical) of 100 million cycles
  • -40 °C...+80 °C operating temperature.
Instantaneous relays

BM 400 relay - Mixed load, 4 contacts

  • Instantaneous relay
  • Plug-in design with secure locking feature for maximum ease of maintenance
  • 3 double make / double break C/O silver contacts (form Z)
  • 1 gold bifurcated C/O contact
  • Contact life (mechanical) of 100 million cycles
  • -40 °C...+80 °C operating temperature
  • Contacts cross pollution barrier
  • Weld no transfer function for silver contacts
Instantaneous relays

C relay - Safety critical, 9 contacts

  • Instantaneous relay
  • Ultra compact package size
  • Safety critical relay
  • Plug-in design with secure locking feature for maximum ease of maintenance
  • 9 double break contacts in all N/O and N/C combinations
  • Weld no transfer safety contacts standard
  • Contact life (mechanical) of 100 million cycles
  • -40°C...+80°C operating temperature
Instantaneous relays

CG relay - Safety critical, 9 contacts, gold plate…

  • Instantaneous relay
  • Ultra compact package size
  • Safety critical relay
  • Plug-in design with secure locking feature for maximum ease of maintenance
  • 9 double break contacts in all N/O and
  • N/C combinations
  • Weld no transfer safety contacts standard
  • Contact life (mechanical) of 100 million cycles
  • -40°C...+80°C operating temperature
Instantaneous relays

CK relay - safety critical, 9 contacts

  • Instantaneous relay
  • Safety critical relay
  • Weld resistant
  • Weld no transfer safety contacts standard
  • Plug-in design with secure locking feature
  • 9 double break contacts in all NO and NC combinations
  • Contact life (mechanical) of 100 million cycles
  • -40°C to +80°C operating temperature
Instantaneous relays

CM relay - 7 contacts and 2 gold contacts

  • Instantaneous relay
  • For combined power & dry circuit applications in diesel locomotives
  • 4 N/C + 5 N/O double break contacts with 1 N/C & 1 N/O gold bifurcated contact and all other contact in silver
  • Weld no transfer safety contacts standard on silver contacts
  • Contact life (mechanical) of 100 million cycles
  • -40 °C...+80 °C operating temperature
Instantaneous relays

CU/CP-U200-B relay - High contact life

  • Miniature plug-in / PCB relay
  • Instantaneous 2 C/O contacts
  • Weld-no-transfer contacts
  • Magnetic arc blow-out
  • Flat, square and tin plated relay pins for excellent socket connection / PCB mounting pins
  • Wide range sockets
  • Transparent cover
  • Optional positive mechanical keying relay to socket
Instantaneous relays

CU/CP-U200-D relay - Miniature, large pull-in volt…

  • Miniature plug-in / PCB relay
  • Sensitive coil (40 % Unom)
  • Instantaneous 1 C/O + 1 N/O contact
  • Weld-no-transfer contacts
  • Flat, square and tin plated relay pins for excellent socket connection /
  • PCB mounting pins
  • Wide range sockets
  • Transparent cover
  • High insulation because of flash barrier
  • Optional positive mechanical keying relay to socket
Instantaneous relays

CU/CP-U200-G relay - Miniature, 2 pole

  • Miniature plug-in / PCB relay
  • Instantaneous 2 C/O contacts
  • Weld-no-transfer contacts
  • Flat, square and tin plated relay pins for excellent socket connection / PCB mounting pins
  • Wide range sockets
  • Transparent cover
  • High insulation because of flash barrier
  • Optional positive mechanical keying relay to socket
Instantaneous relays

CU/CP-U200-U relay - High contact life

  • Miniature plug-in / PCB relay
  • 1 double make/double break contact
  • High maximum current
  • Long electrical life
  • Flat, square and tin plated relay pins for excellent socket connection /
  • PCB mounting pins
  • Wide range sockets
  • Transparent cover
  • Optional positive mechanical keying relay to socket
Instantaneous relays

CU/CP-U300-G relay - Miniature, AC coil

  • Miniature plug-in / PCB relay
  • AC coil
  • Instantaneous, 2 C/O contacts
  • Weld-no-transfer contacts
  • Flat, square and tin plated relay pins for excellent socket connection / PCB mounting pins
  • Wide range sockets
  • Transparent cover
  • High insulation because of flash barrier
  • Optional positive mechanical keying relay to socket
Instantaneous relays

CU/CP-U300-U relay - Miniature, AC coil

  • Miniature plug-in / PCB relay
  • AC coil
  • 1 double make/double break contact
  • High maximum current
  • Long electrical life
  • Flat, square and tin plated relay pins for excellent socket connection / PCB mounting pins
  • Wide range sockets
  • Transparent cover
  • Optional positive mechanical keying relay to socket
Instantaneous relays

D-U200-W safety critical relay with 4 contacts

  • Compact plug-in design
  • Instantaneous, 4 NO/NC contacts
  • Standard back EMF diode
  • Magnetic arc blow-out.
  • Flat, square silver plated relay pins for excellent socket connection
  • Wide range sockets
  • Integrated snap lock
  • Transparent cover
  • High DC breaking capacity
  • Flexibility by many options
  • Positive mechanical keying relay to socket
  • Weld-no-transfer (WNT) contacts
Instantaneous relays

D-U300 relay - Plug-in, 4 pole, AC coil

  • Compact plug-in design
  • AC coil
  • Instantaneous, 4 C/O contacts
  • Magnetic arc blow-out
  • Flat, square silver plated relay pins for excellent socket connection
  • Wide range of sockets
  • Integrated snap lock
  • Transparent cover
  • High DC breaking capacity
  • Optional positive mechanical keying relay to socket
  • Flexibility by many options
Instantaneous relays

D4-U200 relay module - 4 pole

  • Ultra compact space saving 4-pole relay module
  • Easy replacement of 4-pole contactors
  • Module consists of 4-pole relay and housing
  • Various contact combinations possible
  • Many 4-pole Mors Smitt relay • configurations are possible
  • Non polarity sensitive
  • Heavy duty, high VDC switching
  • Spring clamp connections
  • Terminals at front side
  • Surface / wall and 35 mm rail mounting
Instantaneous relays

D8-U200 relay - Plug-in, 8 pole

  • Compact plug-in design
  • Instantaneous, 8 C/O contacts
  • Back EMF suppression diode
  • Magnetic arc blow-out
  • Flat, square and silver plated relay pins for excellent socket connection
  • Wide range sockets
  • 2 integrated snap locks
  • Transparent cover
  • High DC breaking capacity
  • Optional positive mechanical keying relay to socket
  • Flexibility by many options