Phoenix S-PT-EX Series Explosion-proof Components Product Selection Guide

In hazardous industrial environments such as petrochemical, coal mine and pharmaceutical industries, Phoenix S-PT-EX series explosion-proof components are highly trusted for their reliable explosion-proof performance, stable voltage adaptation and flexible installation configuration. This guide collates the product codes, models and detailed descriptions of S-PT-EX series models, helping technical design, procurement and maintenance personnel quickly select suitable explosion-proof components for different hazardous environment circuit protection and control requirements.

1. S-PT-EX Series Core Model List (With Product Descriptions)

2. Quick Interpretation of S-PT-EX Series Model Naming Rules

Mastering the naming logic of S-PT-EX series models can help you quickly identify the core parameters and applicable scenarios of the product:

1. Series Prefix: S-PT-EX is the core identifier, representing Phoenix's dedicated explosion-proof component series, designed for circuit protection and control in hazardous industrial environments.
2. Fault Indication Mark: The suffix (I) indicates that the component is equipped with an optical fault indicator, which can provide real-time feedback on the working status of the product, facilitating timely troubleshooting in hazardous environments.
3. Working Voltage Specification: The number followed by DC (e.g., 48DC, 24DC) represents the rated working voltage of the component, 24V DC is suitable for most low-voltage industrial control systems, and 48V DC is for medium-voltage circuit scenarios.
4. Interface Size Parameter: The thread size mark (e.g., 1/2", 3/4") indicates the external connection interface specification of the component. 1/2" is suitable for small-space installation, and 3/4" is for scenarios requiring higher connection stability.

3. Core Advantages of Phoenix S-PT-EX Series Components

1. Reliable Explosion-proof Performance: Complies with international and domestic explosion-proof standards, suitable for Class I, II hazardous areas with flammable and explosive gases or dust, ensuring safe operation in high-risk environments.
2. Flexible Voltage Adaptation: Covers 24V DC and 48V DC two working voltage options, matching the power supply requirements of different industrial control systems in hazardous environments, with strong versatility.
3. Diversified Installation Configuration: Provides models with 1/2", 3/4" threaded interfaces and standard non-interface models, adapting to different installation space and connection stability requirements, facilitating flexible matching with explosion-proof equipment.
4. Visual Fault Monitoring: Models with the (I) suffix are equipped with fault indicators, realizing real-time status monitoring of circuits in hazardous environments, reducing the difficulty of operation and maintenance and avoiding potential safety hazards.
5. Strong Environmental Adaptability: Adopts high-strength and corrosion-resistant materials, with stable performance under high temperature, high humidity and corrosive gas scenarios, suitable for harsh hazardous industrial environments such as petrochemical and coal mine.

4. Product Selection Suggestions

1. Voltage Matching First: Determine the working voltage of the target circuit in the hazardous environment, select 24DC models for low-voltage control systems, and 48DC models for medium-voltage circuit scenarios.
2. Interface Size Selection: Choose 1/2" interface models for compact installation spaces such as small explosion-proof control cabinets; select 3/4" interface models for scenarios requiring high connection stability and vibration resistance; choose non-interface standard models for general connection scenarios.
3. Fault Indication Function Demand: For critical circuits in hazardous environments (such as emergency stop circuits, main control circuits), prioritize models with the (I) suffix to realize visual fault monitoring; for general auxiliary circuits, select models without fault indicators to reduce costs.
4. Explosion-proof Grade Confirmation: Confirm the explosion-proof grade requirements of the target hazardous area, and select the corresponding S-PT-EX series model according to the product technical manual to ensure compliance with on-site safety standards.