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RCS Audio-Systems TRT-300 A ›VARES-LOOP‹ ring bus module, with 2 relay contacts, IP 21C, including cover

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RCS Audio-Systems TRT-300 A
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347,70 EUR
( 413,76 EUR incl. VAT )
2025-11-22Delivery time from supplier's stock (ca.) 7 workdaysinfo_outline
1x RCS Audio-Systems TRT-300 A ›VARES-LOOP‹ ring bus module, with 2 relay contacts, IP 21C, including cover
Lieske Part No.:1927724
Mfg Part No: TRT-300 A
Weight:0.12 kg
Graduated prices net
From piecesPrice per pieces
4326,84 EUR
8305,98 EUR
12285,11 EUR
16264,25 EUR

Product information for RCS Audio-Systems TRT-300 A:

The TRT-300 A is a specialized emergency switching module within the VARES-LOOP system and not a Ringbus isolator. It is integrated directly into the Ringbus and automatically disconnects downstream speaker circuits in the event of an alarm or emergency announcement. This enables priority control over 100V speaker lines, essential for voice alarm systems.

Equipped with two potential-free changeover relays (230 V AC / 8 A each), the module offers flexible response options: one relay can activate strobe lights, while the other disconnects speakers to ensure that priority announcements are broadcast without interference.

Power is supplied via the Ringbus. An internal capacitor, charged by the TRC-800 A controller, stores enough energy for at least two emergency switching cycles. The module also provides basic line monitoring, allows room-specific volume adjustments, and supports the injection of custom 100V audio programs.

Technical Specifications (English):


Model:
  • TRT-300 A

Power Supply (via TRC-800 A):

  • 19 – 30 V DC (Nominal 30 V DC)
  • Idle Current: 100 µA
  • Max. Power Consumption: 20 mW

Control Signal:

  • Frequency: 20 kHz / 7.5 Vrms

Switching Times:

  • Fade-in: 0.3 s
  • Fade-out: 1.0 s

Wiring:

  • 2-wire system, max. 2.5 mm²
  • Max. loop length: 1,000 m
  • Max. cable diameter: 13 mm

Relay Contacts (2x):

  • Max. 250 V AC / 8 A (Dual-State Type)
  • Max. AC Load: 1,800 W (230 V AC)

LOOP Detection:

  • Short circuit
  • Wire-to-wire
  • Open circuit
  • Ground fault

Mounting:

  • Surface-mounted (e.g., on speaker)

Connections:

  • Loop Input: L+, L−, GND (0.8–2.5 mm²)
  • Loop Output: L+, L−, GND (0.8–2.5 mm²)
  • 2x Changeover relay: NO, COM, NC (0.8–2.5 mm²)

Housing / Protection:
  • ABS with transparent cover
  • IP21C

Dimensions (W x H x D):

  • 110 x 130 x 55 mm

Weight:

  • 150 g

Certification:

  • EN 54-17:2005
  • Certificate: 0560-CPR-142190002

Special Features:

  • Emergency switching via dual relay outputs
  • Enables 100V priority circuits
  • Capacitor buffer for at least two alarm cycles
  • Integration of external signals like flashers
  • Speaker cutoff during alarms



Questions & answers

What is the delivery time of RCS Audio-Systems TRT-300 A ›VARES-LOOP‹ ring bus module, with 2 relay contacts, IP 21C, including cover?

The article RCS Audio-Systems TRT-300 A ›VARES-LOOP‹ ring bus module, with 2 relay contacts, IP 21C, including cover is currently in stock

According to our experience the article is ready for dispatch within 7 working days. The delivery time usually refers to 1 piece. When ordering larger quantities, we can maybe shorten the delivery time. Just send us an inquiry about the desired quantity of RCS Audio-Systems TRT-300 A to our sales team for an exact delivery time.

How can I buy the item at a lower price?

We offer you RCS Audio-Systems TRT-300 A ›VARES-LOOP‹ ring bus module, with 2 relay contacts, IP 21C, including cover always at the best possible price. We can give you a discount of 2% on RCS Audio-Systems TRT-300 A ›VARES-LOOP‹ ring bus module, with 2 relay contacts, IP 21C, including cover if you choose payment in advance on ordering.

In addition, you can save money with our attractive graduation prizes with every purchase. If you buy a minimum of 4 pieces of RCS Audio-Systems TRT-300 A ›VARES-LOOP‹ ring bus module, with 2 relay contacts, IP 21C, including cover we can offer you a price of 326,84 EUR per piece. The more you buy, the cheaper the article will be.

You can also send us a price proposal for your desired quantity of RCS Audio-Systems TRT-300 A ›VARES-LOOP‹ ring bus module, with 2 relay contacts, IP 21C, including cover via the form price proposal. Enter your name, contact details, price and quantity you need. Our sales team will then send you a good quotation immediately.

We also offer individual prices for your needs. You can get an offer by using the form Wholesale Inquiry.

 


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