Configured for discrete signal switching and auxiliary power isolation in control panel automation enclosures, the Omron R7M-A40030-BS1 (MY4NJAC110120 General Purpose Relay) provides direct physical/electrical execution.

Model Identification & Code Designation

• R7M-A40030-BS1: Commercial catalog order reference designation
• MY: Standard general-purpose plug-in power relay platform
• 4: 4PDT (4 Form C) contact pole layout
• N: Built-in LED operation indicator mechanism
• J: Plug-in terminal structure for mounting socket interfaces
• AC110/120: Nominal coil excitation voltage rating (110 to 120 VAC)

Electrical & Physical Specifications

Control Backplane Integration & Network Determinism

The relay provides reliable physical isolation between low-voltage digital output cards and high-power load circuits across PLC control cabinets. Rapid contact switching times preserve system response speeds across Profinet / EtherNet/IP deterministic networks during high-density I/O density scaling routines. Upstream controller modules utilize stable backplane bus communication velocity Licences and uniform firmware flash compatibility to process field feedback signals without loop delays.

Package Delivery Contents

• 1 x R7M-A40030-BS1 Power Relay Module
• 1 x Protective Dust Cover Frame
• 1 x Technical Specification Sheet

Socket Integration & Panel Wiring Protocol

Physical Socket Installation

• Insert the relay pin terminal base vertically into a compatible DIN-rail socket until the plastic retaining clips lock firmly.
• Ensure at least 10 mm lateral spacing between adjacent relay sockets to ensure adequate heat dissipation under full load continuous duty.

Terminal Wiring Directives

• Connect 110/120 VAC control line wires directly to socket coil terminals A1 and A2.
• Wire field load circuits across the numbered 4PDT contact screw terminals, ensuring continuous conductor currents remain under 5 A.

Frequently Asked Questions

• What is the continuous current capacity per pole on this relay?

  Each silver contact pole handles a maximum continuous current rating of 5 A at 250 VAC or 125 VDC.

• What coil excitation voltage range is required for operation?

  The non-latching electromagnetic coil operates within an AC supply voltage range of 110 VAC to 120 VAC.

• What contact arrangement is available inside the sealed housing?

  The unit features a 4PDT (4 Form C) contact setup providing four independent NO and NC switching channels.

• How is the relay physically attached inside a control cabinet?

  The housing features plug-in spade terminals designed for snap-in mounting into standard matching DIN-rail sockets.

• Does the relay include an integral visual status indicator?

  Yes, the MY4NJ variant incorporates an integrated LED indicator that illuminates when the coil is energized.

• What is the nominal power consumption of the AC drive coil?

  The electromagnetic drive coil consumes approximately 1.1 VA during steady-state 110/120 VAC excitation.

• What contact material is utilized for reliable switching performance?

  The switching contacts are constructed from solid silver (Ag) alloy to ensure low contact resistance.

• Can this relay be mounted directly to a printed circuit board?

  No, this specific plug-in terminal model requires a compatible relay socket for panel wire termination.