58.34.9.125.0049SMA Finder 4 CO Contacts 125V DC Modular Interface Relay

Why Choose the Finder 58.34.9.125.0049SMA Interface Relay?

The Finder 58.34.9.125.0049SMA is a four-pole industrial relay interface module featuring a 125 V DC coil, four changeover contacts (4 CO / 4PDT) and convenient 35 mm DIN-rail mounting. Part of the Finder 58 Series, it is designed for electrical control panels, industrial automation systems, PLC interfaces and auxiliary switching applications.

The module combines a plug-in electromechanical relay with a screw-terminal interface socket, providing a practical connection between a control system and multiple switched circuits. Its silver-nickel (AgNi) contacts support general-purpose industrial switching, while the four-pole arrangement allows several functions to be controlled from one coil signal.

The 0049 configuration belongs to the specialist Finder 58 Series hazardous-area interface range. The applicable contact rating for the certified four-pole hazardous-area family is 6 A, subject to additional installation and temperature restrictions. This makes the module relevant to engineered control systems where electrical performance, maintenance accessibility and hazardous-location requirements must be considered together.

Key Advantages

• 125 V DC nominal coil for compatible industrial DC control supplies.
• Four changeover contacts (4 CO / 4PDT) for flexible multi-circuit switching.
• 6 A contact rating for the hazardous-area four-pole configuration.
• Silver-nickel contacts for dependable general-purpose switching.
• 15 A maximum peak contact current under specified conditions.
• 1,500 VA AC1 switching capacity for suitable resistive loads.
• DIN-rail mounting for efficient control panel installation.
• Screw-terminal connections for straightforward wiring.
• Plug-in relay construction supports maintenance and replacement.
• Compact 27 mm width helps optimise panel space.
• Four independently wired contact sets provide flexible switching options.
• Specialist hazardous-area product family for appropriately certified installations.

Key Features

• Finder 58 Series industrial relay interface module.
• 58.34 four-pole interface configuration.
• 125 V DC nominal coil voltage.
• Four changeover contacts (4 CO).
• Four-pole double-throw (4PDT) switching.
• 6 A rated contact current for the hazardous-area configuration.
• 15 A maximum peak contact current.
• 250 V AC rated contact voltage.
• 1,500 VA AC1 resistive switching capacity.
• 350 VA AC15 switching capacity at 230 V AC.
• AgNi silver-nickel contact material.
• Monostable electromagnetic relay operation.
• Screw-terminal interface socket.
• 35 mm DIN-rail mounting to EN 60715.
• 27 mm module width.
• Plug-in relay replacement arrangement.
• Identification label provision.
• Hazardous-area interface family configuration.

Specification note: The 125 V DC coil data is supported by the closely related 58.34.9.125.0050SMA interface relay. The hazardous-area switching ratings are taken from Finder's published 58.34 ATEX/IECEx family documentation. The precise indication, suppression and accessory arrangement of 58.34.9.125.0049SMA should be checked against the current manufacturer's ordering-code table.

Four-Pole Changeover Switching for Industrial Control

The Finder 58.34.9.125.0049SMA provides four changeover contact sets operated by a common 125 V DC coil.

Each contact set includes a common terminal, a normally open contact and a normally closed contact. When the relay coil is energised, the contacts transfer to their operated positions. When the coil is de-energised, they return to their normal positions.

This arrangement is useful for industrial control systems requiring several auxiliary switching functions from one signal, including machine status indication, equipment sequencing, interlocking and control circuit isolation.

Hazardous-Area Interface Applications

The specialist Finder 58 Series hazardous-area range is designed for use in appropriately engineered installations subject to ATEX, IECEx or HazLoc requirements.

Finder's published hazardous-area 58.34 family documentation specifies a 6 A nominal contact rating, rather than the 7 A rating of the standard non-hazardous-area 58.34 interface relay. Additional reductions may apply when several modules are mounted together or when operating under specific certification conditions.

For example, the manufacturer's installation guidance includes restrictions on enclosure selection, wiring, ambient temperature and permissible load current. The exact certification marking and permitted hazardous-area classification must be verified for the complete 58.34.9.125.0049SMA assembly before installation.

DIN-Rail Mounting and Screw-Terminal Connections

The Finder 58.34.9.125.0049SMA uses a DIN-rail-mounted interface socket with screw terminals, making it suitable for organised industrial electrical panel construction.

Its 27 mm width provides a compact four-pole switching solution, while the plug-in relay arrangement supports convenient servicing and replacement without disturbing the permanent socket wiring.

The relay should only be removed or replaced after the equipment has been isolated and made safe. For hazardous-area installations, additional restrictions on connecting or disconnecting components may apply.

Typical Applications

• Industrial automation control panels.
• PLC output interfacing.
• 125 V DC control systems.
• Multi-circuit auxiliary switching.
• Electrical interlocking and sequencing.
• Industrial alarm and signalling circuits.
• Process control equipment.
• OEM machinery control assemblies.
• DIN-rail electrical distribution and control panels.
• Hazardous-area control systems where the complete assembly is appropriately certified.
• Industrial equipment requiring four changeover outputs.
• Maintenance-friendly relay interface installations.