CMRA4845 CRYDOM Solid Relay Phase Cage Din Rail

Review CRYDOM Solid State Relay Phase Cage Type Din Rail Scr

The Crydom CMRA4845 Solid State Relay (SSR) is a versatile and reliable solution for controlling inductive loads up to 48V and 5A. This phase cage, Din-Rail mountable SSR is designed with a high-performance H-bridge circuit that ensures fast switching times and minimal power loss.

The CMRA4845 features a compact design, measuring only 28mm in width and 97mm in length, making it an ideal choice for limited space applications. It is constructed with a robust die-cast aluminum housing, which provides excellent heat dissipation and protection against environmental hazards.

This SSR operates with a low on-state voltage drop of approximately 350mV at 25 C, ensuring efficient power transfer to the load. The phase cage design of this relay allows it to be installed in a three-phase power distribution system, making it suitable for a wide range of industrial applications.

The CMRA4845 comes with a built-in opto-isolator, which provides electrical isolation between the control circuit and the load circuit. This feature ensures safe and reliable operation, even in hazardous environments.

This SSR is also equipped with a diagnostic LED, which indicates the status of the relay. The LED flashes during the relay's switching cycle and remains lit when the relay is in the on or off state.

The Crydom CMRA4845 Solid State Relay is designed to operate in temperatures ranging from -20 C to 70 C, ensuring reliable performance in various industrial environments. It also has a high immunity to electromagnetic interference, making it suitable for use in noisy environments.

In summary, the Crydom CMRA4845 Solid State Relay is a robust and reliable solution for controlling inductive loads in industrial applications. Its compact size, fast switching times, and electrical isolation make it an ideal choice for space-constrained and hazardous environments. With its wide operating temperature range and high electromagnetic interference immunity, it can be used in various industrial applications with confidence.

Pros and Cons of Buying Crydom CMR-A4845 Solid State Relay (SSR) for Phase Cage Din Rail SCR Applications

The Crydom CMR-A4845 is a solid state relay (SSR) designed for phase cage Din Rail SCR (Silicon Controlled Rectifier) applications. This SSR offers several advantages over traditional electromechanical relays, but also comes with some trade-offs. In this analysis, we will discuss the key benefits and potential drawbacks of using the Crydom CMR-A4845 SSR in your application.

1. Faster switching times: SSRs like the Crydom CMR-A4845 have much faster switching times compared to electromechanical relays, typically in the microsecond range. This can lead to improved system performance and response times.

2. Longer lifespan: SSRs do not have moving parts, meaning they are less prone to wear and tear. This results in a longer overall lifespan compared to electromechanical relays.

3. Low power consumption: SSRs consume significantly less power in standby mode compared to electromechanical relays, making them an energy-efficient option.

4. Improved reliability: Since SSRs do not have moving parts, they are less susceptible to failure due to mechanical stress or wear.

5. Reduced noise and vibration: The absence of mechanical components in SSRs results in reduced noise and vibration, which can be beneficial in certain applications.

1. Higher upfront cost: SSRs like the Crydom CMR-A4845 typically have a higher upfront cost compared to electromechanical relays. This can be a disadvantage for applications with tight budgets.

2. Limited current handling capacity: SSRs have lower current handling capacity compared to electromechanical relays of the same size. This may limit their applicability for high-power applications.

3. Potential for voltage spikes: SSRs can experience voltage spikes during switching, which may require additional protection components in the system.

4. Complexity in design: Integrating an SSR into a system can be more complex than using an electromechanical relay, as it may require additional components and considerations.

The Crydom CMR-A4845 solid state relay offers several advantages, including faster switching times, longer lifespan, lower power consumption, improved reliability, and reduced noise and vibration. However, it also comes with some disadvantages, such as a higher upfront cost, limited current handling capacity, potential for voltage spikes, and increased design complexity.

Based on the information provided, it is recommended that the Crydom CMR-A4845 solid state relay be considered for applications where fast switching times, improved reliability, and low power consumption are priority, and where the upfront cost and design complexity are acceptable. For applications with high power requirements, electromechanical relays may still be the more suitable option. Ultimately, the choice between an SSR and an electromechanical relay depends on the specific requirements and constraints of the application.

Details:

Light industrial. And enclosures. Electrical outlet's. Receptacles.

Crydom CMRA4845 solid state relay, 1 phase, cage type, din rail, scr: electrical connection heat sink integral, input current 15 ma, voltage 90 to 140v ac, maximum output with 45 a, without switching mode zero crossing, range 48 530v standards ce certified, csa lr81689, curus e116950, iec 62314, rohs compliant, switch component type scr, finger safe yes, mounting configuration form a details. Electrical boxes.

specifications genpurrelays:

• brand: Crydom
• mpn: Cmra4845
• country of origin: Mx
• type: Industrial Electrical Controls Automation Electrical Switches
• features: Solid State Relay, Electrical Connection Cage Type, Heat Sink Integral, Input Current 15 Ma, Input Voltage 90 To 140v Ac, Maximum Output Current With Heat Sink 45 A, Maximum Output Current Without Heat Sink 45 A, Output Switching Mode Zero Crossing, Output Voltage Range 48 To 530v Ac, Standards Ce Certified, Csa Lr81689, Curus E116950, Iec 62314, Rohs Compliant, Switch Component Type Scr, Current Type Ac, Finger Safe Yes, Mounting Style Din Rail, Switch Configuration Form A
• item length: 4.500
• item height: 2.400
• weight: 1.2000
• battery included: No

returns genpurrelays:

• policy: returns accepted
• paid by: seller
• method: money back
• time: 60 days

shipping genpurrelays:

• service: standard
• transit: 4-4 days
• class: standard
• type: fixed

offer genpurrelays:

• availability: in stock
• sold #: 13
• options: ship-to-home
• started: november 28, 2025
• prices: $34.99–$139.99
• item condition:
  • New – Open box
  • New
  • Used

payments genpurrelays:

• other
• wallet: apple-pay
• credit card: discover

seller genpurrelays:

• rating: 99.8%
• # reviews: 1286698
• city: USA

general genpurrelays:

• category: Business & Industrial > Electrical Equipment Supplies > General Purpose Relays