Phoenix RIF-0/RIF-1 Series Miniature Interface Relay Modules Selection Guide

Opening: Compact Control Solutions for Small-Channel Industrial Signal-Load Isolation

The Phoenix RIF-0/RIF-1 series is a portfolio of miniature industrial interface relays designed for small-channel (1–2 way) signal isolation and load control in space-constrained industrial systems. Covering RIF-1 (1–2 channel output, multi-voltage input, diverse certifications) and RIF-0 (single-channel output, low-power signal conversion) sub-series, these modules feature ultra-compact DIN rail mounting, multi-voltage compatibility (12DC/24DC/24AC/120AC/230AC), and specialized variants (AU certification, FG protection, FLK14 interface) for targeted scenarios. Widely used in compact control cabinets, auxiliary device control, and regional market (Australian) projects, they ensure stable signal transmission between low-voltage control circuits and small-capacity load circuits while saving installation space.

I. Core Advantages of the RIF-0/RIF-1 Series

1. Ultra-Compact & Space-Saving Design

   • Miniature housing (width ≤20mm for most models) for dense cabinet installation, supporting up to 10 modules per 200mm DIN rail segment;
   • DIN rail (NS 35/7.5) snap-in mounting, no tools required for installation, reducing cabinet wiring complexity.

2. Multi-Voltage & Multi-Channel Flexibility

   • Input voltages: Cover DC (12V/24V) and AC (24V/120V/230V) ranges, adapting to global industrial control system standards (120AC for North America, 230AC for EU/Asia, 24DC for PLC systems);
   • Output configurations: 1×21 (1 normally open contact) and 2×21 (2 normally open contacts) for small-channel load control, matching low-power actuator/sensor connection needs.

3. Specialized Functional Customization

   • Regional certification: AU-suffix models comply with Australian AS/NZS standards for local market projects;
   • Enhanced protection: FG-suffix variants feature reinforced environmental protection for harsh outdoor/harsh workshop scenarios;
   • Interface compatibility: FLK14 interface models (RIF-1-V8/PT/FLK14/OUT) support direct docking with FLK14 signal terminals;
   • Low-dropout input: LDP-suffix DC models (24DC/12DC) are compatible with low-power PLC control signals, reducing energy consumption.

4. Industrial-Grade Reliability

   • 4kV electrical isolation between control and load circuits, protecting PLC/DCS controllers from load-side interference;
   • Wide operating temperature range (-40°C to +70°C), anti-vibration (5g) design for factory floor and outdoor auxiliary equipment;
   • LED status indicators for real-time relay activation monitoring, enabling quick fault localization in dense cabinets.

II. Product Classification & Detailed Parameter Table

The series is categorized by core series (RIF-1/RIF-0) and sub-type (RSC/BSC/BPT/OSC/OPT/V8 special type) with sub-variants based on input voltage, output configuration, and special functional suffixes.

1. RIF-1 Series (1–2 Channel Miniature Interface Relays)

Mainstream miniature relays for 1–2 channel load control, with multi-voltage input, AU certification, and specialized interface variants.

1.1 RIF-1-RSC Sub-series (Signal-Controlled Miniature Relays)

Signal-controlled relays for low-voltage PLC/DCS signals, supporting AC (LV) and DC (LDP) input, with 1/2-channel output and special certifications.

1.2 RIF-1 BSC/BPT Sub-series (Basic Miniature Relays)

Cost-effective basic relays for general small-channel signal/power switching, with no special voltage customization.

1.3 RIF-1-V8 Special Type (FLK14 Interface Relay)

Specialized relay with FLK14 interface for direct docking with FLK14 signal terminals, suitable for modular signal distribution.

2. RIF-0 Series (Single-Channel Ultra-Miniature Relays)

Ultra-compact single-channel relays for low-power signal conversion and basic load control, with OSC/OPT (solid-state) and BSC/BPT (electromechanical) variants.

2.1 RIF-0 OSC/OPT Sub-series (Solid-State Miniature Relays)

Solid-state relays for low-power DC/AC signal conversion, with no mechanical contacts for long service life.

2.2 RIF-0 BSC/BPT Sub-series (Basic Ultra-Miniature Relays)

Electromechanical basic relays for single-channel general signal/power switching, with ultra-compact size.

III. RIF-0/RIF-1 Series Nomenclature Decoding

RIF-[Series]-[Sub-type]-[Voltage Type]-[Input Voltage]/[Output Specification]-[Special Suffix]

• RIF: Product series identifier (miniature industrial interface relay for small-channel signal isolation and load control).
• Series:
  • RIF-1 = 1–2 channel miniature relay (supports multi-voltage input, special certifications, FLK14 interface);
  • RIF-0 = Single-channel ultra-miniature relay (solid-state/electromechanical, low-power signal conversion).
• Sub-type:
  • RSC = Signal-controlled relay (for low-voltage PLC/DCS signals, high isolation);
  • BSC/BPT = Basic signal/power relay (cost-effective, general small-channel switching);
  • OSC/OPT = Solid-state relay (no mechanical contacts, long service life for low-power DC/AC conversion);
  • V8 = Special interface relay (with PT signal conditioning and FLK14 terminal compatibility).
• Voltage Type:
  • LV = Low-voltage AC input (24AC/120AC/230AC, compatible with global AC standards);
  • LDP = Low-dropout DC input (12DC/24DC, low power consumption for PLC signals);
  • (no suffix for OSC/OPT) = Direct voltage matching (input-output voltage specified in model).
• Input Voltage: 12DC/24DC/24AC/120AC/230AC (matches control system voltage standards).
• Output Specification:
  • 1X21/2X21 = 1/2 normally open contacts (×21 denotes standard 10A/250V AC contact for electromechanical models);
  • 1ICT/1IC = 1 integrated/isolated contact (for precision signal isolation);
  • 24DC/48DC/230AC/2/100/1 = Solid-state relay output (voltage/current rating, e.g., 24DC/2 = 24V DC 2A).
• Special Suffix:
  • AU = Australian market certification (complies with AS/NZS standards);
  • FG = Enhanced environmental protection (for harsh outdoor/harsh workshop scenarios);
  • MS = MS interface compatibility (for modular cabinet module connection);
  • FLK14 = FLK14 terminal interface (for modular signal distribution);
  • PT = PT signal conditioning (for high-precision signal control).

IV. 3-Step Quick Selection Technique

Step 1: Select Series Based on Channel Count & Space Requirements

• 1–2 channel load control (medium compactness): Choose RIF-1 series; suitable for PLC 24V/AC 230V control of small actuator/sensor clusters.
• Single-channel ultra-compact control (minimum space): Opt for RIF-0 series; solid-state variants (OSC/OPT) for contact-free long life, electromechanical (BSC/BPT) for cost-effectiveness.
• FLK14 terminal modular distribution: Pick RIF-1-V8/PT/FLK14/OUT (2905195) for direct docking with FLK14 signal terminals.

Step 2: Match Sub-type & Voltage to Control Signal

• PLC low-voltage DC signals (12V/24V): Select LDP-suffix RIF-1-RSC variants (2903350/2908501) for low-dropout compatibility and 4kV isolation.
• AC control signals (24V/120V/230V): Choose LV-suffix RIF-1-RSC variants; 120AC for North America (2903348), 230AC for EU/Asia (2903347), 24AC for local control (2903349).
• Low-power DC/AC signal conversion (no mechanical contacts): Opt for RIF-0 OSC/OPT solid-state relays (2905657/2905295) for long service life (≥100,000 hours).
• Cost-effective general small-channel control: Select BSC/BPT basic variants (2900930/2900957) for non-critical load switching.

Step 3: Add Special Features for Regional/Environmental Needs

• Australian market projects: Choose AU-suffix variants (2903343/2903346) to meet local regulatory requirements.
• Harsh outdoor/harsh workshop scenarios: Pick FG-suffix RIF-1-RSC (2909848) for enhanced environmental protection against dust/moisture.
• Modular cabinet module connection: Select MS-interface RIF-1-RSC (2905660) for seamless integration with cabinet modular systems.
• Precision signal conditioning: Opt for PT-signal RIF-1-V8 (2905195) for high-precision FLK14 terminal signal distribution.

V. Recommended Industry-Scenario Combinations

VI. Selection Pitfall Avoidance Guide

1. Regional Certification Neglect: Australian projects using non-AU relays → Choose AU-suffix models (2903343/2903346) to meet local regulatory compliance and prevent project delays.
2. Solid-State vs Electromechanical Mismatch: High-cycle switching (≥1000 times/day) using electromechanical relays → Select RIF-0 OSC/OPT solid-state variants (2905657) to avoid contact wear and extend service life.
3. Voltage Type Error: PLC 24V DC signals using LV AC relays → Pick LDP DC variants (2903350) to ensure signal compatibility and prevent relay non-activation.
4. Space Oversight: Ultra-compact cabinets using RIF-1 relays → Opt for RIF-0 ultra-miniature models (2900957/2901873) to save cabinet space and enable dense module layout.
5. Interface Incompatibility: FLK14 terminal systems using standard relays → Choose RIF-1-V8/PT/FLK14/OUT (2905195) to ensure modular signal distribution and reduce wiring errors.

Conclusion: Select the Right RIF-0/RIF-1 Relay for Compact Industrial Control

The Phoenix RIF-0/RIF-1 series provides targeted miniature interface relay solutions for small-channel industrial control, covering multi-voltage input, regional certifications, solid-state/electromechanical switching, and modular interface compatibility.