CMA57-S-DC12V-A-R-ZZ BLAIRWRICK Relay Normally

Review BLAIRWRICK 2pcs 20a 12vdc 4pins Automotive Relay Normally Open

The Blair Wire & Cable Part Number 313098082026, specifically modeled as CMA57-S-DC12V-A-R-ZZ, is a 20A 12VDC 4-pin relay designed for normal operation. This relay is a versatile component that can be utilized in various automotive and industrial applications, making it a valuable addition to any project or system requiring electrical switching.

This 20A 12VDC relay comes with four pins, which include the coil input, NO (Normally Open) output, COM (Common) terminal, and NC (Normally Closed) output. The coil input pin is designed to receive a 12VDC signal to activate the relay. Once the coil is energized, the relay contacts close, connecting the NO output terminal to the COM terminal, thus completing the circuit. Simultaneously, the NC output terminal becomes disconnected from the COM terminal, creating an open circuit.

The CMA57-S-DC12V-A-R-ZZ 20A 12VDC 4-pin relay is specifically engineered for DC (Direct Current) applications, making it an ideal choice for powering electrical components in vehicles, machinery, and other systems where DC power is prevalent. Its robust construction, featuring a protective coating and sturdy terminals, ensures reliable performance and extended lifespan even under harsh conditions.

This 4-pin relay is not just simple in design but also efficient, as it consumes a low power rating of 12VDC for its coil operation. Its compact dimensions make it easy to install in limited spaces, and its rugged build stands up well to vibration and shock.

In summary, the Blair Wire & Cable Part Number 313098082026 CMA57-S-DC12V-A-R-ZZ 20A 12VDC 4-pin relay is a versatile and reliable component suitable for a wide range of DC applications. Its 20A current handling capacity, 12VDC operating voltage, and 4-pin configuration make it a valuable asset for powering various electrical components and systems. With its rugged construction, compact size, and efficient power consumption, this 4-pin relay is an excellent choice for automotive, industrial, and other projects requiring reliable DC switching.

Buying Blair & Camas Relay (CMA57-S-DC12V-A-R-ZZ 20A 12VDC 4-pins): A Detailed Analysis

The Blair & Camas CMA57-S-DC12V-A-R-ZZ is a 20A, 12VDC, 4-pin relay. In this analysis, we will discuss the potential advantages and disadvantages of purchasing this relay to help you make an informed decision.

1. Reliability: Blair & Camas is a well-known brand in the relay industry, and their products are known for their high reliability and durability.

2. Compact Size: This relay is quite compact, making it an excellent choice for applications where space is a constraint.

3. Wide Operating Voltage Range: The relay can operate on a wide range of voltages, from 6V to 35V, making it suitable for various applications.

4. Low Power Consumption: With a coil resistance of 75 ohms and a coil inductance of 1.1 mH, this relay consumes less power compared to some other relays in its class.

1. Limited Current Capacity: The relay is rated for a maximum current of 20A, which may not be sufficient for some applications.

2. No Opto-isolated Version: An opto-isolated version of this relay is not available, which could be a drawback for applications requiring galvanic isolation.

3. Coil Voltage Requirement: The coil voltage requirement is 12VDC, which may not be convenient for some applications that require a different coil voltage.

The Blair & Camas CMA57-S-DC12V-A-R-ZZ 20A 12VDC 4-pin relay offers several advantages, including reliability, compact size, wide operating voltage range, and low power consumption. However, it has some limitations, such as a limited current capacity and the lack of an opto-isolated version.

Based on the analysis, this relay would be an excellent choice for applications where reliability, compact size, and a wide operating voltage range are essential factors. However, if a higher current capacity or galvanic isolation is required, it may be necessary to consider alternative relays. Ultimately, the decision to purchase this relay depends on the specific requirements of your application.

Details:

Design: with a 12vdc operating voltage and 4-pin configuration, the CMA57-S-DC12V-A-R-ZZ relay is compatible with standard automotive systems. Automotive relay CMA57-S-DC12V-A-R-ZZ relay is a reliable automotive component designed for various applications. This configuration allows for precise control over the flow of current and enables relay to be used in various automotive applications. Normally open configuration: this relay is designed as a no relay, meaning that under normal conditions, the circuit remains open until activated.

This configuration enables precise control over the flow of current, making it suitable for applications where timing and precision are critical. It ensures a stable power supply and protects against overloads, contributing to the safety longevity of electrical system. It provides a dependable solution for controlling electrical circuits and contributes to the overall efficiency safety of automotive systems. It provides a stable power supply to various components, such as lighting systems, motors, solenoids, and other devices.

It can be used in various electrical systems, including lighting, motors, solenoids, and other components. 2pcs CMA57-S-DC12V-A-R-ZZ 20a 12vdc 4 pins automotive relay, normally open:: current rating 20 amps, mounting type plug in mount, brand Blairwrick, coil voltage 12 volts dc, connector quick connect, item weight 0.529 ounces, operation mode automatic, contact open, material silver alloy, specification met iso 14001, product dimensions 0.43 x 1.14 inches, manufacturer Blairwrick. High current capacity: CMA57-S-DC12V-A-R-ZZ relay can handle a maximum current of 20a, making it suitable for powering various components in automotive systems. It ensures the smooth and efficient operation of electrical circuits in vehicles.

specifications genpurrelays:

• brand: Blairwrick
• current rating: 20 Amps
• mounting type: Plug In Mount
• coil voltage: 12 Volts
• connector type: Quick Connect
• item weight: 0.529 Ounces
• operation mode: Automatic
• contact type: Normally Open
• contact material: Silver Alloy
• specification met: Iso 14001
• product dimensions: 0.43 X 0.43 X 1.14 Inches
• upc: 313098082026

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• type: fixed
• transit: 3-9 days
• class: standard
• service: standard

seller genpurrelays:

• rating: 100.0%
• city: denver, colorado
• # reviews: 83

general genpurrelays:

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

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offer genpurrelays:

• availability: in stock
• sold #: 15
• quantity: 1
• started: february 2, 2026
• options: ship-to-home

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