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Time Delay Relays
Time difference between two events. (thefreedictionary.com)
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Frequency Sensing Relay
This relay is a frequency monitoring relay with four stages of adjustable frequency pick up & drop out points. Each frequency set point can be set for under or over frequency operation & has an independent time delay driving an output relay. An undervoltage lockout is used to disable the four frequency outputs when the voltage falls below a preset level. Each of the four setting stages has a rate of change of frequency (ROCOF) element with an independent time delay.
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Timer, Delay-Off, 4 Pole
TDE4N relay
Plug-in electronic industrial timer relay with four change-over contacts. When the relay is de energized there is a delay on drop-out without any auxiliary power supply. The delay time is adjustable with a lockable knob. The relay can also be supplied with a fixed time delay (no knob).The relay is equipped with a LED which indicates the presence of energizing voltage. Standard equipped with back EMF suppression. Optionally equipped with magnetic arc blow-out for high breaking capacity and long contact life.
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Monitors & Flashers
NAI designs and manufactures a wide variety of COTS and Custom Power Monitors, Time Delay Relays, and Flashers specifically designed for rugged defense and industrial applications.
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Relays, Switches, Sensors
CR Magnetics Sensing Relays and Switches provide a simple method of monitoring electrical properties and alerting a system to a fault or event condition. These products are available with a wide variety of configurations, including time delays, various output styles and logic. From simple proving switches, to fully featured high performance ground fault sensing. Our relays and switches will provide the designer with the tools needed to implement many different control and event sensing schemes.
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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.
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Time Delay Relays
DARE Electronics manufactures a wide variety of time delay relays including fixed and adjustable delay on operate and delay on release time delay relays, repeat cycle timers, interval timers, and motor driven timers. Time Delay Relays can be used in a various applications, such as event sequencing, instrument control, alarm circuits, or watchdog circuits.
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Automatic Voltage Regulating Relay- Standard Model
NMC’s Microcontroller based Automatic Voltage Regulating Relays (AVR Relays) are latest technology based Relays used for regulating the secondary voltage of Power Transformers with On Load Tap Changer (OLTC). The Parameter settings are made through the front panel keys & are stored in NVRAM. Independent time delays can be set for first control pulse & subsequent pulses. Built-in Tap displays Tap number of Power Transformer. OLTC is blocked for UV, OV, OC, CF, Min/Max Tap Positions & Tap Fail . in manual mode, Tap Raise/Lower can be achieved through front keys. In TEST mode, Relays, Display and LED indications can be checked. A pair of contacts are available for Raise, Lower, UV, OV, Manual Mode, CF, TF & OC. There are two nos. of 5 Amps C.T.’s available, one for the Over Current blocking and L.D.C. & other for measuring the Current.
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Vibration Monitors
VS1 / VS2
Features • VS1 protects against excessive vibration levels • VS2 is ideal for use deliberately vibrating machinery • Settable RMS vibration velocity alarm trip-point and delay time • LED’s provide an instant view of machine status • Isolated SPDT relay output or transistor output • 24 VDC (18-30 VDC) powered
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Compact Automatic Voltage Regulating Relay With Built- In TPI
NMC’s Microcontroller based Automatic Voltage Regulating Relays (AVR Relays) are latest technology based Relays used for regulating the secondary voltage of Power Transformers with On Load Tap Changer (OLTC). The Parameter settings are made through the front panel keys & are stored in NVRAM. Independent time delays can be set for first control pulse & subsequent pulses. Built-in Tap displays Tap number of Power Transformer. OLTC is blocked for UV, OV, OC, CF, Min/Max Tap Positions & Tap Fail . in manual mode, Tap Raise/Lower can be achieved through front keys. In TEST mode, Relays, Display and LED indications can be checked. A pair of contacts are available for Raise, Lower, UV, OV, Manual Mode, CF, TF & OC. There are two nos. of 5 Amps C.T.’s available, one for the Over Current blocking and L.D.C. & other for measuring the Current.
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Compact Automatic Voltage Regulating Relays
NMC’s Microcontroller based Automatic Voltage Regulating Relays (AVR Relays) are latest technology based Relays used for regulating the secondary voltage of Power Transformers with On Load Tap Changer (OLTC). The Parameter settings are made through the front panel keys & are stored in NVRAM. Independent time delays can be set for first control pulse & subsequent pulses. Built-in Tap displays Tap number of Power Transformer. OLTC is blocked for UV, OV, OC, CF, Min/Max Tap Positions & Tap Fail . in manual mode, Tap Raise/Lower can be achieved through front keys. In TEST mode, Relays, Display and LED indications can be checked. A pair of contacts are available for Raise, Lower, UV, OV, Manual Mode, CF, TF & OC. There are two nos. of 5 Amps C.T.’s available, one for the Over Current blocking and L.D.C. & other for measuring the Current.
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Voltage Monitoring, Timer Delay-on -off, 4 Pole
MTDV4 Relay
Plug-in electronic voltage monitoring relay with optional delay-on and delay-off timer function and four change-over contacts. The delay time is adjustable with a lockable knob (either delay-on or delay-off, the other delay is fixed). The relay can also be supplied with fixed time delays (no knob). The pull-in voltage and drop-out voltage are both adjustable via internal screws. The relay can also be supplied with a fixed pull-in and drop-out voltage. Suitable for monitoring DC voltages.
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Tachometers, Counters & Displays
Displays Include; Rate, Time In Process, Product, Sum, Difference, Ratio, Draw Process, Batch, or Total Counting. Field Adjustable, Full Diagnostic Functions. Built-In Relay Testing Capabilities. Highly Programmable. Single-Channel or Bi-Directional Counting. Setpoint and Start Delay Functions. Multiple Relay and Analog Output Options. Keypad Lockout
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PXI/PXIe Microwave Relay, Single SPDT, 12.4GHz, 50Ω, N-Type
40-780B-511
The 40-780B-511 (PXI) and 42-780B-511 (PXIe) are single SPDT 12.4GHz unterminated microwave relay modules. The 40/42-780B range is available with one, two, three or four SPDT switches capable of switching frequencies up to 67GHz in 50Ω or 2.5GHz in 75Ω. Connections are made via front panel mounted high quality RF coaxial connectors, SMA or N-Type for 50Ω and 1.6/5.6 in 75Ω versions. Remote versions are also available which can support up to three SPDT relays in a single slot.
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PXI/PXIe Power Relay Module, 3xSPDT, 20 Amp
42-166-102
The 40/42-166-102 is a PXI/PXIe high density power relay module with 3xSPDT switches rated at 20A. The 40/42-166 range is available with SPST, SPDT or SP4T switching configurations.
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PXI General Purpose 2A Relay Module 16xSPDT, 78 D-sub
40-131-101
Low cost, general purpose electromechanical relay cards suitable for use where reed relay based switching cards do not have sufficient voltage or current carrying capability. Applications include switching of medium power AC and DC loads or slave switching larger relays, contactors or solenoids. Connections are made to the card via a front panel mounted 50 or 78 pin D-Type connector plug.
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PXI/PXIe Microwave Relay, Triple SPDT, 2.5GHz, 75Ω, 1.6/5.6
40-780B-753
The 40-780B-753 (PXI) and 42-780B-753 (PXIe) are triple SPDT 2.5GHz 75Ω unterminated microwave relay modules. The 40/42-780B range is available with one, two, three or four SPDT switches capable of switching frequencies up to 67GHz in 50Ω or 2.5GHz in 75Ω. Connections are made via front panel mounted high quality RF coaxial connectors, SMA or N-Type for 50Ω and 1.6/5.6 in 75Ω versions.
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PXI/PXIe Microwave Relay, Quad SPDT, 67GHz, 50Ω, SMA-1.85
40-780B-574
The 40-780B-574 (PXI) and 42-780B-574 (PXIe) are quad SPDT 67GHz unterminated microwave relay modules. The 40/42-780B range is available with one, two, three or four SPDT switches capable of switching frequencies up to 67GHz in 50Ω or 2.5GHz in 75Ω. Connections are made via front panel mounted high quality RF coaxial connectors, SMA or N-Type for 50Ω and 1.6/5.6 in 75Ω versions.
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PXI/PXIe Microwave Relay, Quad SPDT, 40GHz, 50Ω, SMA-2.9
40-780B-544
The 40-780B-544 (PXI) and 42-780B-544 (PXIe) are quad SPDT 40GHz unterminated microwave relay modules. The 40/42-780B range is available with one, two, three or four SPDT switches capable of switching frequencies up to 67GHz in 50Ω or 2.5GHz in 75Ω. Connections are made via front panel mounted high quality RF coaxial connectors, SMA or N-Type for 50Ω and 1.6/5.6 in 75Ω versions. Remote versions are also available which can support up to three SPDT relays in a single slot.
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PXI/PXIe Microwave Relay, Triple SPDT, 18 GHz, 50 Ω, SMA, Remote Mount, Failsafe
42-780B-523-E
The 40-780B-523-E (PXI) and 42-780B-523-E (PXIe) are triple failsafe SPDT 18 GHz unterminated microwave relay modules with remotely mounted relays. The 40/42-780B range is available with one, two, three or four SPDT panel mounted relays capable of switching frequencies up to 67 GHz in 50 Ω or 2.5 GHz in 75 Ω. Connections are made via high quality RF coaxial connectors, SMA or N-Type for 50 Ω and 1.6/5.6 in 75 Ω versions. Remote versions can support up to three SPDT relays in a single slot.
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PXI Mixed Configuration Relay Module - 1 Cell Populated
40-138-AA-BB-CC-DD (1 CELL)
The 40-138 2A Relay Module with 1 cell populated is a cell-based mixed configuration switching module suitable for applications requiring medium power switching with high density. It provides a broad selection of mixed relay types for greater flexibility and features 2A current capacity and voltages to 300VDC/250VAC.
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PXI Dual 4 to 1 RF MUX MCX 75 Ohm
40-832-102
The 40-832-102 is a 75 Ohm 4 to 1 RF MUX with 2 banks in a single PXI slot. It has been designed to exhibit low insertion loss and VSWR through the use of modern RF relay technology at an affordable cost. Each MUX has been carefully designed to ensure excellent and repeatable RF characteristics to frequencies of 3GHz with each path having a nominally equal insertion loss. The design of the 40-832 minimizes the injection of noise and unwanted signals into the signal path by careful attention to the mechanical and electrical design.
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PXI/PXIe Power Relay Module, 16xSPDT, 5 Amp, 50-Pin D-type Connector
42-158-103
The 40/42-158-103 is a PXI/PXIe high density power relay module with 16xSPDT switches rated at 5A. User connection is via a 50-pin D-type male connector.
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PXI 48 x SPDT Electromechanical Relays
40-148-101
The 40-145/46/48 range of high density switching modules are available in Normally Open (SPST & DPST) and changeover (SPDT) configurations. Connections are made via a front panel 200 pin female connector. General purpose relays are suitable for the construction of small switching networks, I/O port switching, for slave switching larger relays or for operating external devices (e.g. lamps, solenoids etc.).
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PXI/PXIe Power Relay Module, 8xSPDT, 5 Amp, 50-Pin SGMC Connector
40-158-004
The 40/42-158-004 is a PXI/PXIe high density power relay module with 8xSPDT switches rated at 5A. User connection is via a 50-pin SGMC male connector. The 40/42-158 range is available in 8, 16, 24 or 32 SPST configurations with or without hardware interlock. Electro-mechanical power relays are used which are suitable for switching loads up to 5A at 250VAC.
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PXI-2521, 40-Channel, 2 A, DPST PXI Relay Module
778572-21
40-Channel, 2 A, DPST PXI Relay Module—The PXI‑2521 is a general-purpose switch module that features independent double‑pole single‑throw (DPST) armature relays. Each relay is nonlatching with very low on-resistance and low thermal offsets. The PXI‑2521 is fully software programmable, and it supports onboard relay count tracking. With an efficient coupling of voltage/current capability and relay density, this switch module is ideal for automated test equipment (ATE) loads or for controlling heaters, lights, and fans.
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PXI/PXIe High Density Electro-mechanical Relay Module, 75xSPST, Normally Closed
42-145A-101-NC
The 40-145A-101-NC (PXI) and 42-145A-101-NC (PXIe) 75xSPST relay module is part of a range of high density switching modules available in Normally Open (SPST & DPST), Changeover (SPDT) and Normally Closed (SPST) configurations. Connections are made via a front panel 200-pin female connector.
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PXI 5A 16xSPST High Density Power Relay Module
40-137-001
These PXI Power Relay Modules are suitable for applications requiring power relay switching with high density. This version features 5A current and voltage to 110VDC/250VAC, they are configured as Single Pole Single Throw (SPST). Connections are made via front panel mounted 37 or 78-pin D-Type connector. Along with this 16 x SPST, 5A version, the range also includes a 39 x SPST, 2A version and a 32x SPST version - go to Also in the Range above to learn more. Typical applications will be found in Automotive Test, Aerospace Test and Power Cell Test applications.
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PXI/PXIe High Density Electro-mechanical Relay Module, 100xSPST, Normally Open
40-145A-201
The 40-145A-201 (PXI) and 42-145A-201 (PXIe) 100xSPST relay module is part of a range of high density switching modules available in Normally Open (SPST & DPST), Changeover (SPDT) and Normally Closed (SPST) configurations. Connections are made via a front panel 200-pin female connector.
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PXI/PXIe Microwave Relay, Triple SPDT, 40GHz, 50Ω, SMA-2.9
40-780B-543
The 40-780B-543 (PXI) and 42-780B-543 (PXIe) are triple SPDT 40GHz unterminated microwave relay modules. The 40/42-780B range is available with one, two, three or four SPDT switches capable of switching frequencies up to 67GHz in 50Ω or 2.5GHz in 75Ω. Connections are made via front panel mounted high quality RF coaxial connectors, SMA or N-Type for 50Ω and 1.6/5.6 in 75Ω versions. Remote versions are also available which can support up to three SPDT relays in a single slot.
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PXI 2A Relay Module 80xSPST
40-139-101
The 40-139 2A Relay Series is suitable for applications requiring medium power switching with high density. Featuring 2A current capacity and voltages to 300VDC/250VAC it is useful for cost critical applications.
