MTL4544

Overview

Eaton MTL4544 Repeater Power Supply is designed for hazardous area applications, supporting two channels of 4–20 mA signals with HART communication.

Basic Information

• Manufacturer: Eaton

• Series: MTL

• Product number: MTL4544

• Type: Repeater Power Supply

• Channels: 2

Hazardous Area Approvals

• Zone 0: IIC, T4–6 hazardous area (certified)

• Division 1: Group A hazardous location

Safe‑Area Output

• Signal range: 4–20 mA

• Under/over‑range: 0–24 mA

• Load resistance (MTLx544): 0–360 Ω @ 24 mA, 0–450 Ω @ 20 mA

• Load resistance (MTLx544S): Current sink, 600 Ω max

• Voltage source: 24 VDC

• Circuit output resistance: > 1 MΩ

• Circuit ripple: < 50 µA peak‑to‑peak

Hazardous‑Area Input

• Signal range: 0–24 mA (including over‑range)

• Transmitter voltage: 16.5 V @ 20 mA

Performance

• Transfer accuracy @ 20 °C: Better than 15 µA

• Temperature drift: < 0.8 µA/°C

• Response time: Settles within 10 % of final value in 50 µs

Communications

• Supported: HART® (terminals 1 & 2, 4 & 5)

Indicators

• LED: Green, power indication

Power Consumption

• Current consumption: 96 mA @ 24 VDC with 20 mA signals

• Power dissipation:

  • MTLx544: 1.4 W @ 24 VDC

  • MTLx544S: 1.9 W @ 24 VDC

Safety Description (Per Channel)

• Terminals 2–1 & 3, 5–4 & 6: Uo = 28 V, Io = 93 mA, Po = 651 mW, Um = 253 V rms/DC

• Terminals 1–3 & 4–6: Simple apparatus (1.5 V, 0.1 A, 25 mW), connectable without certification into IS loop < 28 V open‑circuit

Mechanical Specifications

• Dimensions: 1.58 (W) × 10.98 (H) × 12.36 (D) cm

• Weight: Approx. 0.11 kg

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