Vimar By-me Plus Line Coupler, 29V Nominal Supply, DIN Rail TH35, Electrical Isolation, Message Filtering

Overview

The Vimar VM01845.1 is a line coupler used to connect two By-me Plus bus lines while keeping the lines electrically separated. It works on a 29 V bus supply, draws 30 mA, and mounts on a DIN 60715 TH35 (EN 50022) rail, taking up 2 DIN modules (35 mm) in your electrical cabinet.

On a boat, this is typically installed in the main distribution panel or an automation cabinet when the bus layout needs two powered sections, or when two lines need to communicate without tying the wiring together directly. The unit must be powered from both sides, so each connected line should have its own bus power available.

Key features

• Couples two By-me Plus bus lines while maintaining electrical separation between the lines
• Rated supply voltage: 29 V bus; the device must be powered from both sides
• Current draw: 30 mA
• Dissipated power: 800 mW average, 1100 mW maximum
• DIN rail mounting on DIN 60715 TH35 (EN 50022); occupies 2 modules of 17.5 mm (35 mm total)
• Filters bus traffic so only relevant messages pass between lines, with a manual routing mode available
• Configured using the View Pro app; the Function button supports reset and manual routing functions

Compatibility and fit

This coupler is intended for Vimar By-me Plus bus installations that use a 29 V bus supply. It is not a KNX, KNX-RF, or LON coupler.

Because it is a DIN device, it belongs inside a protected electrical cabinet rather than in an exposed location. Plan space for a 2-module unit and leave room for clean cable routing and strain relief, especially in high-vibration installs.

Installation and setup

Clip the unit onto a TH35 DIN rail and wire each bus side to match your system topology. In marine panels, keep bus wiring organized and supported so vibration does not work connections loose over time.

Configuration is handled through the View Pro app. The Function button provides a reset procedure and a manual mode that routes all messages, with an automatic timeout after 2 hours.

Electrical and system integration

This is a low-voltage bus device, so treat its cabling and terminations like any other SELV circuit on board. In mixed-voltage cabinets, keep mains conductors (230 V AC) physically separated from SELV wiring to reduce noise pickup and to keep the panel serviceable.

Use cases on board

Common layouts include splitting an automation backbone between zones such as salon and cabins, or joining a secondary panel into the same By-me Plus system while keeping each side independently powered. It is a practical fit for refits where the bus is being extended into a new area of the vessel and you want clearer segmentation between lines.

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Returns may be requested within 30 days of receiving your order. Items must be unused, uninstalled, unaltered, and returned in their original packaging with all tags, packing materials, blank warranty cards, manuals, instructions, accessories, and included items. Certain products, including installed or used electronics, electrical components, lighting, consumables, custom or special-order items, cut-to-length products, safety equipment, and merchandise exposed to water or marine conditions, may not be eligible for return.

To request a return, sign in to your account and select the applicable order and items, and submit your request for review. Eligible unfulfilled items may also be submitted for cancellation within 1 hour of placing the order. Returns or cancellations are not considered approved until you receive confirmation from Apollo Lighting. Please do not ship or drop off merchandise before receiving return approval and instructions.

Customers are responsible for arranging and paying for return shipping unless the return is due to an error by Apollo Lighting or the item is verified as defective, damaged, or incorrect. Missing, damaged, defective, or incorrect items must be reported within 2 business days of delivery, and photos or other documentation may be required for review. If the issue is verified, Apollo Lighting may provide or reimburse return shipping and issue a replacement or refund depending on the circumstances. International customers are responsible for return shipping, duties, taxes, customs charges, brokerage fees, and other costs associated with an international return.

After your return is received and inspected, approved refunds are issued to the original payment method and may take 5-7 business days to appear after processing. Original shipping and handling charges are nonrefundable, and the value of any included free items that are not returned may be deducted from the refund. Apollo Lighting does not charge a standard restocking fee on eligible returns. Returns that are incomplete, damaged, installed, used, altered, improperly packaged, or otherwise do not meet the eligibility requirements may be refused. We recommend using a trackable and appropriately insured shipping service for all customer-arranged returns.

For assistance, contact info@apollolighting.com or call +1 (954) 375-0100.

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Many products sold by Apollo Lighting include a manufacturer's warranty covering defects in materials or workmanship. Warranty terms vary by brand, product category, and model, so eligibility, coverage duration, exclusions, and available remedies are determined by the applicable manufacturer. We recommend reviewing the warranty information provided with your product before installation or use, especially for marine electronics, navigation equipment, lighting, electrical systems, pumps, safety equipment, and other specialized marine products.

If you need warranty service, the claim must follow the process established by the manufacturer, authorized service center, or designated warranty provider. You may be asked for proof of purchase, a serial number, product registration, photos, maintenance or installation records, or other documentation. Apollo Lighting does not determine or modify a manufacturer's warranty coverage or final claim decision, but we are happy to help provide purchase information and direct you to the appropriate manufacturer or warranty resource.

Keep your receipt, product documentation, serial number information, and original packaging when practical. Damage caused by normal wear, misuse, improper installation, insufficient maintenance, corrosion, impact, unauthorized modifications, electrical issues, or operation outside the manufacturer's specifications may not be covered. Warranty claims are separate from standard returns, so a product that has been installed, used, or exposed to marine conditions may no longer qualify for return while still remaining eligible for evaluation under the manufacturer's applicable warranty.

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