Phoenix Contact ST-REL7-HG220/4X21 Relay Module

USD 285.00

Total:

Pluggable relay connector featuring a 220V DC coil and 4PDT AgSnO2+Au contacts rated for 6A. Delivers reliable industrial switching with an integrated LED.

SKU Phoenix-2892465 Category
MOQ: 5 pcs   >>   Order in multiples of 5
Industrial Control > Relays > Relay Modules

Phoenix Contact ST-REL7-HG220/4X21 Relay Module

Model Identifier ST-REL7-HG220/4X21
Official Part Number 2892465
GTIN Standard 4017918078713

Technical Overview

The Phoenix Contact ST-REL7-HG220/4X21 (Part Number 2892465) is a robust, pluggable relay connector engineered for high-reliability industrial automation and control applications. Equipped with a high-quality miniature round relay, this module features a 220 V DC nominal input voltage and four changeover contacts (4PDT). The contacts are constructed from AgSnO with a hard gold plating, enabling highly dependable switching across a wide spectrum of loads, from low-level logic signals up to 6A continuous current at 250 V AC/DC. Designed to seamlessly plug into basic termination blocks, it minimizes wiring time and simplifies maintenance. An integrated LED display provides immediate visual indication of operational status, while its rugged thermal design guarantees a 100% operating factor in challenging ambient temperatures ranging from -20°C to 60°C.

Key Features

  • 4 changeover contacts (4PDT) for complex signal routing and interlocking
  • AgSnO contacts with hard gold plating (AgSnO2+Au) for reliable small-to-large load switching
  • Pluggable module design for quick installation on compatible basic terminal blocks
  • Integrated LED indicator provides clear operational status feedback
  • Wide operating ambient temperature range of -20 °C to 60 °C
  • 100% operating factor ensures maximum continuous duty reliability
  • Compliance with IEC 60664 and IEC 60664A standards

220 V DC Coil Voltage with 6A Continuous Load Capacity

Technical Specification Matrix

ParameterValue
Nominal Input Voltage (UN)220 V DC
Input Voltage Range176 V DC to 242 V DC
Contact Switching Type4 changeover contacts (4PDT)
Maximum Switching Voltage250 V AC/DC
Limiting Continuous Current6 A
Contact MaterialAgSnO, hard gold-plated
Typical Input Current at UN6 mA
Maximum Power Dissipation1.32 W
Typical Response Time15 ms
Ambient Temperature (Operation)-20 °C to 60 °C

Industrial Applications

1. High-Voltage Substation Interlocking

In utility substations, high DC voltages like 220V DC are standard for battery-backed station control systems. This relay provides reliable galvanic isolation and multi-circuit switching via its 4PDT configuration to manage complex breaker interlocking schemes.

Problem Solved

Safely switches high-voltage control circuits while providing multiple auxiliary contact outputs for SCADA feedback and safety interlocking.

220 V DC ControlGalvanic IsolationSwitchgear Interlocking4PDT Configuration

2. Railway Traction Control Systems

Railway rolling stock and wayside signaling infrastructure frequently utilize 220V DC for onboard logic. The relay's hard gold-plated contacts ensure that even low-current logic signals are switched reliably without oxide-induced resistance.

Problem Solved

Prevents signal failure in high-vibration, variable-load railway environments by utilizing stable AgSnO2+Au contacts.

Traction ControlLow-Level SwitchingAgSnO2+Au Contacts220V DC Infrastructure

3. Heavy Machinery Logic Routing

Large-scale manufacturing machinery requires robust safety and power routing. The 6A continuous current rating allows this pluggable relay to directly drive medium-sized contactors or solenoids during critical operational sequences.

Problem Solved

Eliminates the need for intermediate amplifying relays by directly driving up to 6A loads from a high-voltage DC command signal.

Logic Routing6A Continuous CurrentContactor DrivingPluggable Diagnostics

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