Relays

Showing 1–12 of 19 results

Big Bear Instruments offers a wide variety of relays such as Set-Point Alarm, General Purpose, Electronic Overload, and Relay Sockets.

  • ATC Diversified Electronics 339B-200-T-2-X Time Delay Relay

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    The 339B is a solid-state TDR with octal plug-in base that maintains excellent repeat accuracy despite wide voltage and temperature variations even after long periods of down-time. The 339B has six dial selected ranges from fractions of a second to as long as 10 hours and selectable on-delay or interval timing modes. Fixed timing units are available upon request.

    $100.17
  • ATC Diversified Electronics 339B-359-Q-2-X Adjustable TDR

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    The 339B is a solid-state TDR with octal plug-in base that maintains excellent repeat accuracy despite wide voltage and temperature variations even after long periods of down-time. The 339B has six dial selected ranges from fractions of a second to as long as 10 hours and selectable on-delay or interval timing modes. Fixed timing units are available upon request.

    $100.17
  • ATC Diversified Electronics 366C-400-Q-30-PX Predetermining Counter

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    Based on a powerful built-in microcomputer, the compact 366 is the most versatile and cost-effective counter ATC has ever built. No industrial counter has ever achieved a higher level of reliability and ruggedness than the 366. It has no moving parts in its electronic logic circuits, only plug-in circuit boards which are computer-tested for reliability and assembled virtually without hand wiring. Its few mechanical components have been selected for reliable service; long life relays with heavy-duty contacts and rotary set point selector switches with extremely low wear characteristics.

    $450.01
  • ATC Diversified Electronics ARA-120-AHE Triplexor Alternating Relay

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    The ARA-120-AHE is a special function TRIPLEXOR designed for three load installations This model has a field selection switch that is used to omit one of the three loads for general or emergency maintenance while duplexing the remaining two loads The ARA-120-AHE has the option of alternating on each load cycle or by external clocking This alternating relay also allows for additional loads to run in the event of excess load requirements.

    $364.44
  • ATC Diversified Electronics ARB-120-ACA Alternating Relay

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    The ARA Series is the standard Duplexor providing automatic alternating sequence. The ARB has the automatic sequencing feature plus the option of locking it into one sequence. A three position switch permits the field selection of normal duplexing action, locking in the A-B sequence, or B-A sequence.

    $89.63
  • ATC Diversified Electronics ARB-120-ADA Alternating Power Relay

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    The ARA Series is the standard Duplexor providing automatic alternating sequence. The ARB has the automatic sequencing feature plus the option of locking it into one sequence. A three position switch permits the field selection of normal duplexing action, locking in the A-B sequence, or B-A sequence.

    $85.02
  • ATC Diversified Electronics ARB-120-AEA Alternating Relay

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    The ARA Series is the standard Duplexor providing automatic alternating sequence. The ARB has the automatic sequencing feature plus the option of locking it into one sequence. A three position switch permits the field selection of normal duplexing action, locking in the A-B sequence, or B-A sequence.

    $89.63
  • ATC Diversified Electronics ISO-120-AFA Safe Relay

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    The ISO Series single channel devices are used to provide a safe and reliable means of controlling loads from hazardous locations without releasing sufficient energy, under normal or abnormal
    conditions, to cause ignition of a flammable or combustible atmospheric mixture while in its most easily ignited concentration

    $155.88
  • ATC Diversified Electronics RB-08 Relay Socket

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    Surface Mounted Relay Socket, Recommended For Use With All 8 Pin Octal Plug-In Devices. UL Recognized and Csa Certified For 10 Amps @ 600 Vac. The Molded Thermoplastic Base Has Brass, Nickel Plated Inserts With #6-32 Steel, Nickel Plated Screws.

    $7.81
  • ATC Diversified Electronics RB-11 Relay Socket

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    Surface Mt. Relay Socket – 11-Pin. 10A@300VAC

    $13.52
  • ATC Diversified Electronics SPM-120-AAA-100K Single Channel Failure Alarm

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    The ATC Diversified SPM Series Single Channel Seal Failure module is a specialized control for monitoring the shaft seal of a submersible pump motor A leak is detected by sensing the position of a resistive float switch installed in the seal cavity When the resistance drops below the sensitivity rating, the output relay energizes and the LED illuminates

    $105.77
  • ATC Diversified Electronics SPM-120-ADA Temperature Switch Relay

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    The non-volatile Latching Temperature Switch relay monitors a normally-closed-low temperature switch It incorporates a bistable relay that retains its state during power failures LEDs indicate the status of the relay, and connections for an external reset button are provided for manual control The reset inputs of multiple units may be connected to a single push button as long as proper polarity is observed when making the connections Under normal conditions the temperature switch is closed and the relay is de-energized When the temperature switch opens, the relay energizes and latches on until the temperature switch re-closes and the reset button is pressed The unit will function properly with zero to 2k Ω of resistance in series with the temperature switch

    $134.16