DMB3

DMB3 Datasheet

Two accessories, shown in Figure 4, are available for use with the Crydom 3RHP 3 Phase Solid State Contactor, including a DIN rail mounting bracket that can be installed on the 3RHP mounting base DMB3 , and an external auxiliary contact switch HAC1 . The auxiliary switch includes one normally open and one normally closed contact, each rated at 5 amps rms, 600 VAC, 50/ 60 Hz. The external auxiliary contacts permit pilot duty switching and or status indication of open or closed position of the Contactor.

Part	Datasheet
DMB3	DMB3 (pdf)

Related Parts	Information
HAC1	HAC1

PDF Datasheet Preview
Crydom RHP Series 3 Phase Hybrid Solid State Contactor By Paul Bachman Fellow Engineer, Crydom, Inc. ABSTRACT Solid State Relays and Contactors SSRs have been available in one form or the other for over 40 years. Traditional Electromechanical Relays and Contactors EMRs as well as Mercury Displacement Relays and Contactors MDRs have been available even longer. However, current Environmental regulations now make the future use of Mercury Contactors problematic, and Electro Mechanical Contactors may not offer the required life expectancy or operational characteristics to be suitable replacements for MDRs. Crydom, a world class supplier of Solid State Relays and Controls, has introduced the 3RHP family of Hybrid Solid State Contactors1 to address this market need for both existing applications and new designs. The 3RHP’s hybrid technology combines the benefits of both SSR and EMR technologies in a unique approach resulting in a Hybrid Solid State Contactor with ratings of up to 50Amps 600VAC. The following sections include a comprehensive description of the 3RHP operation, ratings, features and benefits as well as accessories and suggestions for both single and three phase application wiring. Figure 1 - Crydom 3RHP Three-phase Hybrid Solid State Contactor. 1 Patent pending Crydom Inc. 2320 Paseo de las Americas, Suite 201 San Diego, CA, 92154 Tel 619 210-1550 Fax 619 710-8544 E-Mail Web: INTRODUCTION Mercury Contactors offer high switching capacity and long life combined with relatively low cost. Traditional EMR Contactors provide low cost but with somewhat limited life expectancy and certain switching transient issues. Solid State Contactors offer superior life expectancy and no transient issues, but are relatively more expensive and require an external heat sink in higher power applications or elevated ambient temperature environments. Figure 2 shows a simplified comparison of key attributes for each type of switching technology where 100% equals best available performance of each in typical AC contactor applications. MD Contactor EM Contactor SS Contactor Life Exp Transient Enviro Thermal Cost Figure 2 - Attributes of commercially available AC switching technologies. Combining Solid State switching technology with EMR switching technology, thus creating a Hybrid Solid State Contactor, provides a cost effective means of addressing both the known limitations of SSRs as well as EMRs. Solid State Switching provides a nearly unlimited life expectancy with zero transients during make and break transitions, while the EMR contacts eliminate nearly all of the thermal heating associated with SSRs during load current conduction, thus producing a superior performing contactor. Crydom Inc. 2320 Paseo de las Americas, Suite 201 San Diego, CA, 92154 Tel 619 210-1550 Fax 619 710-8544 E-Mail: Web: CRYDOM HYBRID SOLID STATE CONTACTOR DESIGN AND OPERATION The Crydom three-phase Hybrid Solid State Contactor or 3RHP combines three Solid State switches and one 3 phase EMR Definite Purpose Contactor with proprietary control circuitry. As shown in Figure 3, a Solid State switch in parallel with an EMR contact forms each pole of the 3RHP. When a control signal is applied to the 3RHP input terminals, all 3 of the Solid State Switches are turned on immediately and simultaneously to connect the load to the 3 phase AC power supply. AC or DC control Input Status Control circuit SSR trigger circuit SSR Output AC Power Supply LOAD EMR trigger circuit EMR Output

PDF Datasheet Preview

Crydom RHP Series
3 Phase Hybrid Solid State Contactor

By Paul Bachman Fellow Engineer, Crydom, Inc.

ABSTRACT

Solid State Relays and Contactors SSRs have been available in one form or the other for over 40 years. Traditional Electromechanical Relays and Contactors EMRs as well as Mercury Displacement Relays and Contactors MDRs have been available even longer. However, current Environmental regulations now make the future use of Mercury Contactors problematic, and Electro Mechanical Contactors may not offer the required life expectancy or operational characteristics to be suitable replacements for MDRs.

Crydom, a world class supplier of Solid State Relays and Controls, has introduced the 3RHP family of Hybrid Solid State Contactors1 to address this market need for both existing applications and new designs.

The 3RHP’s hybrid technology combines the benefits of both SSR and EMR technologies in a unique approach resulting in a Hybrid Solid State Contactor with ratings of up to 50Amps 600VAC.

The following sections include a comprehensive description of the 3RHP operation, ratings, features and benefits as well as accessories and suggestions for both single and three phase application wiring.

Figure 1 - Crydom 3RHP Three-phase Hybrid Solid State Contactor.
1 Patent pending

Crydom Inc.
2320 Paseo de las Americas, Suite 201 San Diego, CA, 92154 Tel 619 210-1550 Fax 619 710-8544 E-Mail Web:

INTRODUCTION

Mercury Contactors offer high switching capacity and long life combined with relatively low cost. Traditional EMR Contactors provide low cost but with somewhat limited life expectancy and certain switching transient issues. Solid State Contactors offer superior life expectancy and no transient issues, but are relatively more expensive and require an external heat sink in higher power applications or elevated ambient temperature environments.

Figure 2 shows a simplified comparison of key attributes for each type of switching technology where 100% equals best available performance of each in typical AC contactor applications.

MD Contactor

EM Contactor

SS Contactor

Life Exp Transient Enviro

Thermal

Cost

Figure 2 - Attributes of commercially available AC switching technologies.

Combining Solid State switching technology with EMR switching technology, thus creating a Hybrid Solid State Contactor, provides a cost effective means of addressing both the known limitations of SSRs as well as EMRs. Solid State Switching provides a nearly unlimited life expectancy with zero transients during make and break transitions, while the EMR contacts eliminate nearly all of the thermal heating associated with SSRs during load current conduction, thus producing a superior performing contactor.

Crydom Inc.
2320 Paseo de las Americas, Suite 201 San Diego, CA, 92154

Tel 619 210-1550

Fax 619 710-8544

E-Mail:

Web:

CRYDOM HYBRID SOLID STATE CONTACTOR DESIGN AND OPERATION

The Crydom three-phase Hybrid Solid State Contactor or 3RHP combines three Solid State switches and one 3 phase EMR Definite Purpose Contactor with proprietary control circuitry. As shown in Figure 3, a Solid State switch in parallel with an EMR contact forms each pole of the 3RHP. When a control signal is applied to the 3RHP input terminals, all 3 of the Solid State Switches are turned on immediately and simultaneously to connect the load to the 3 phase AC power supply.

AC or DC
control

Input Status

Control circuit

SSR trigger circuit

SSR Output

AC Power Supply

LOAD

EMR trigger circuit

EMR Output

More datasheets: A0212X | A0210X | A02MXB | A0211Y | A0211X | A0212Y | M64824 SL005 | M64824 SL002 | M64824 SL001 | HAC1

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived DMB3 Datasheet file may be downloaded here without warranties.

DMB3

DMB3 Datasheet

Datasheet ID: DMB3 507248