Category Archives: Relays / Sockets (solid state, pcb, plug-in, timer)

Sensata Solutions for Chillers & Boiler HVAC Systems


HVAC is the Heating, Ventilating and Air Conditioning method for conditioning the indoor environment of a building, usually with the intent of keeping the occupant comfortable.

Sensata provides many solutions to monitor this process and make it as efficient as possible. Sensata solutions range from the sensors that allow users to monitor their system to circuit breakers which protect the application.


Click Here →  Sensasta HVAC Systems


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Crydom Announces the PMP Series, a New Addition to the NOVA22 Product Family


PMP Series

Crydom announces a new addition to the NOVA22 product family, the PMP Series of panel mounted proportional control SSRs.

With ratings of up to 90 Amps @ 40°C these fully configurable relays are perfect for applications that require to control the amount of power delivered to a resistive load in proportion to an analog control input.

PMP Series are fully configurable Panel Mount proportional control relays with micro controller based technology designed to provide control of the power delivered to single-phase loads of up to 90 Amps at 90 to 600 VAC.

PMP Series SSRs vary the output power in proportion to an analog control input, which can be one of 3 signal types: 0-5 VDC, 0-10 VDC or 4-20 mA. The output can be controlled by 2 different methods, selectable on the unit: Phase Angle Control, and Burst Fire Control (with Distributive Zero Cross).

PMP Series proportional controllers are ideal for a wide range of applications that require control of the load power, such as for example lamp dimming and resistive heating control.

Main features of the PMP Series include:
–  Output ratings of 25, 50 and 90 Amps
–  Available in 3 operating voltage ranges: 90-280, 345-530 and 420-660 VAC
–  Selectable Operation Mode: Phase Angle or Burst Fire control
–  Selectable Control Input: 0-5 VDC, 0-10 VDC, 4-20 mA
–  50/60 Hz Adaptive Operational Frequency function
–  4-20 mA input does not require an auxiliary power supply
–  LED multifunction status indicator
–  Contactor configuration with “Elevator” screw terminals
–  Optional overvoltage protection (built-in TVS diode)


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Crydom Announces Expansion of the Solicon DRC Series


DRC Series

Crydom is pleased to announce the expansion of their SOLICON DRC Series, now featuring new DRC3P 3-phase contactors with higher operating voltage rated at 600 VAC and an enhanced 18-30 VDC control input option for DRC3R Reversing models.

DRC Series
•  7.6 Amp AC Semiconductor Motor Controller
•  Load voltage range up to 600VAC
•  Fits standard 35mm DIN Rail
•  LED input status indicator
•  AC or DC control
•  Zero Voltage (resistive loads) or instantaneous (inductive loads) turn-on output
•  C-UL-US Listed, CCC Certified, IEC Rated, CE & RoHS Compliant, Horsepower Rated
•  Built-in Overvoltage Protection
•  Ultra-efficient thermal management design (Patented)

Solicon DRC3 Series are Solid State Contactors intended for frequently switching on and off three phase loads up to 5 HP, 600 VAC 7.6 Amps. They are available in both contactor versions
DRC3P and reversing contactor versions DRC3R.

The Solicon Contactor DRC3P is available in either instantaneous turn-on (for Motor Control) or zero voltage turn-on (for Resistive Loads). It is available in either 2 or 3 controlled leg versions. The 2 legs control version is particularly suitable for motor control circuits where the neutral conductor is not utilized.

The Solicon Reversing Contactor DRC3R includes an interlock control that allows only off, forward and reverse operation in a safe mode while providing high space saving; it switches
instantaneously upon application of the control voltage unless an instantaneous change of direction is commanded, then it will delay the direction change by 100msec in order to prevent
simultaneous forward and reverse operations.

All the models of Solicon DRC3 Series combine the benefits and advantages of a solid state contactor with the functionality and simplicity of use of an electromechanical contactor thanks to the proprietary thermal management technology (Patented) and complete electrical insulation (no grounding required); the embedded auxiliary contacts, normally open and/or normally
closed, are intended to be used at 18-280VAC. Five different control voltages are available in order to cover most applications. All models include overvoltage protection.


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Crydom DRML1 Load Monitoring Module Now Available for NOVA22 Solid State Relays


DRML1, Crydom’s Load Monitoring Module designed to detect partial or total load failure
 of up to 8 loads and 50 Amps

Crydom introduces the DRML1 Load Monitoring Module, specially designed for NOVA22 solid-state relays which allows to monitor up to 8 heating elements, with similar current value, for a total current ranging from 1.2 Amps up to 50 Amps.


The DRML1 module measures the current value and compares it against a pre-set value (Teach value), which is stored during installation. Normal operation is monitored and failures are detected. An alarm is activated when the module detects undercurrents in the heating circuit below -12.5% of the nominal current. The module allows also for other alarm conditions to be detected such as: overcurrent condition (when the current exceeds the maximum of +12.5% of the nominal current), blown fuses (open load), damaged (short circuited SCR) and interrupted SSR, as well as those in half-wave operation. The nominal current value (Teach value) is set by the operator either with the “Teach-In” push button, placed on the front, or with the external “Teach-In” input.

The new DRML1 Load Monitoring Module offers three unique features in the market. It allows the user to select the maximum current value of 20 Amps or 50 Amps, operates with a minimum partial load detectable value of 150 mA and includes an adjustable alarm response delay (0.1 sec, 1 sec or 5 sec), selectable via a parameter selector switch. This avoids fault messages generated by voltage drops.

Malfunctions are indicated by a multicolor LED and can be localized systematically thanks to the alarm output which allows up to 128 DRML1 modules to be connected to a collective alarm. The LED indicates when power is ON and also when the Teach-In function is activated (Blue), when the input signal is ON (Green) and when an alarm condition is activated (Red).

The DRML1 is designed for direct installation on NOVA22 Solid State Relays contactor configuration versions (both Panel Mount PM22 Series and DIN Rail Mount DR22 Series models). The plastic enclosure provides IP20 level protection.

DRML1 can be used in different applications but its key advantages make it ideal for quality supervision of plastic parts production in injection molding machines, thermoforming machines and rubber parts production.

Main features include:
–  Up to 8 loads can be monitored
–  Selectable max current rating: 20 Amps or 50 Amps
–  Selectable alarm delay (0.1 sec, 1 sec, 5 sec)
–  Minimum current for single load: 150 mA
–  Alarms detected: undercurrent, overcurrent, open mains voltage, SSR fault
–  Alarm output: PNP open collector, 6-28 VDC, 100 mA
–  Up to 128 modules can be connected in parallel
–  Operating temperature: -25°C to +70°C
–  Pluggable module for both DIN Rail and Panel Mount NOVA22 SSRs
–  Multicolor LED with input status and alarm indication

Crydom’s DRML1 Module is C-UL-US Recognized and compliant to IEC 61000-4 (EMC) and IEC 60068-2 (Shock and Vibration) requirements. It’s also CE compliant to the Low Voltage Directive as well as the RoHS Directive.


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Crydom EL Series: Now Available With Improved Mechanical Design



The EL Series is Now Available with an Improved Mechanical Design Rated up to 30 Amps and Optional 90° Bent Terminals for Reduced Spaces


Crydom presents the redesigned range of EL Series AC and DC output solid state relays with ratings up to 30 Amps, making it the highest current rating SSR in this compact footprint. The EL Series SSR comes in a 21mm x 35mm housing with quick connect terminals, ideal for applications where space is at a premium, such as small commercial and medical machines.

The internal construction and housing of the EL Series has been re-designed for improved reliability, robust mechanical construction and improved thermal performance. Recently added optional built-in overvoltage protection (internal TVS diode) on AC models, as well as a unique optional 90° bent terminals for applications where vertical space is limited.

Other features of the EL Series include:
•  Load current ratings of 30 Amps @ 24-280 VAC and 10 Amps @ 3-100 VDC
•  Back-to-back SCR output with low off state leakage current (AC models)
•  Low dissipation Mosfet output (DC models)
•  Flexible 5, 12 and 24 VDC control voltage options
•  Zero voltage or instantaneous turn-on outputs (AC models)

Crydom’s EL Series SSRs are C-UL-US Recognized, TUV compliant according to IEC 62314 (AC output version), CE compliant to the Low Voltage Directive, and RoHS & China RoHS compliant. Additionally, the enclosure and the PCB of the EL Series solid state relays meet the requirements of standard IEC60335-1, which make it an ideal option for demanding applications in the household appliances and professional food equipment.


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Finder’s New Masterlin System of Push-In Relay Interface Modules


MasterlineGet a grip on panel installations with Finder’s new MasterIn system of push-in relay interface modules. Finder’s latest advancement provides a high performance, screwless system that allows panel designers and installers to save precious time and money.

When challenged head-to-head, the push-in terminal technology outperformed the conventional installation method— a whopping 80 per cent faster than manual screw drivers, and 25 per cent faster than electric screw drivers.

The MasterIn System also demonstrates better clamping performance under vibration and movement than its screw-in rivals.

Jumper links allow quick connections and separate test points add to the flexibility of the system and are further reasons to choose the new Finder interface range.

The MasterIN System incorporates the existing 39, 48, 4C and 58 Series Finder Relay Interface Modules, and caters for a wide range of applications including industrial automation, building management systems and electrical control panels.


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Finder Expands its 22 Series Modular Contactor Range


Finder 22 Series

To facilitate greater integration of controls and automation in building services, Finder has expanded its 22 Series modular contactor range to include 4 pole versions rated at 40A and 63A.
Finder’s modular contactor range is an ideal choice for higher current switching in quiet areas. With its virtually silent operation, it’s suitable for residential, hospital, hotel and other commercial installations.

For demanding industrial applications, it features a robust contact design, allowing high inrush capability, making it great for controlling lighting as well as motor loads.

Giving greater integration of controls and automation in building services, it provides a compact, quiet, high-power multi-pole switching solution.

Protective separation between coil and contacts provides reinforced insulation for safety, as required by many domestic and commercial standards/codes of practice.


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Finder Type 072.11 New Relay and Sensor Combination Detects Liquid Leakage


Finder Type 072

With the recent reminders of the need to protect against flood water and other detrimental water leakage, Finder has expanded its range of liquid level control relays with the introduction of the 072.11 surface water sensor.

Working in conjunction with a liquid level control relay from the 72 series range, the surface water sensor has been designed to sense water levels as low a 1 mm, making it ideal for a range of applications, from detecting spillage around vending machines in sensitive areas such as computer suites, to the early detection of flood water in the basement or ground floor of a home.

Reinforced electrical isolation between the three circuit elements within the level control relay helps the system designer meet the personal safety required in virtually all equipment standards, and low voltage makes the sensor safe to touch.


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Crydom Introduces the DRH Series, a Compact Size Solution for Heating Applications with Loads up to 20 Amps


Excellence In Solid State Technology Available In Crydom’s DRH Series Of Power Enhanced AC 3-Phase Contactors

Crydom is pleased to announce the new DRH Series of AC Output Solid State Contactors. Based on the same technology and compact 45mm size of the SOLICON DRC, the most innovative compact DIN Rail Mount, IEC standard based contactors in the market, combines all the advantages of a solid state design with the functionality and simplicity of use of an electromechanical contactor.

DRH Series

While the DRC series was intended for motor applications, the DRH Series, thanks to the enhanced power of 20 Amps on each channel, is intended to switch any resistive as well as inductive loads; it is the perfect solution in any heating application in market segments such as Plastic, Packaging, HVAC, Food & Beverage, Printing and Medical. This product is an ideal replacement of electromechanical contactors when higher reliability is needed or when fast cycling is frequent. Their compact size and easy installation make these devices an optimum solution in commercial and industrial applications (e.g. industrial band heaters), especially when retrofitting. Reliable operation is ensured by means of the integrated over-voltage protection, over-temperature protection, high I2t and surge current ratings and immunity conformance to industrial standards.

Main features include:
– Rating up to 600 VAC, 18 A (3 controlled legs), 20 A (2 controlled legs)
– Integrated over-voltage protection
– Integrated over-temperature protection
– Alarm output in case of over-temperature
– Enclosed heat sink eliminates the need for protective earth connection
– 4-32 VDC or 90-280 VAC control input
– Multicolor LED with input status and alarm indication
– UL 100 kA Short Circuit Current Rating
– C-UL-US listed, CE compliant

These features make the DRH Series unique in the market with a broader working temperature range (-10ºC to +70ºC), better resistance to surge current (716 Amps), higher resistance to short circuit (2560 A2sec), smaller size and a greater life span (50 million cycles).

All these premium features are included in both available DRH models:
– DRH3P60x18x, Solid State Contactor 3 controlled legs, 18 Amps @40°C
– DRH3P60x20x, Solid State Contactor 2 controlled legs, 20 Amps @40°C

The DRH Series is available in either instantaneous turn-on (typically used for inductive loads or motor loads) or zero voltage turn-on (more often used with resistive loads). Both are available with either 2 or 3 controlled legs.

The high current rating is the result of an innovative design that increases the air flow thus improving the thermal performance. DRH contactors also feature over-temperature protection to avoid overheating in case of a fan malfunction. The internal temperature is constantly monitored and the fan is switched only when necessary in order to extend its lifetime. The LED makes the operator aware of internal temperature rising before it reaches its limit; once reached, the contactor will safely switch off and the alarm output contact will switch on.

Crydom’s DRH Series contactors are C-UL-US Listed and compliant to IEC 60947-4-2 requirements. They are also CE compliant to the Low Voltage Directive as well as the EMC and RoHS Directive.


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