M9494D1000 Honeywell Actuator

Honeywell M9494D1000 Modutrol IV Proportional Motor – 300 lb-in, 24 Vac, Adjustable Stroke

Overview

The Honeywell M9494D1000 is a high-torque, proportional Modutrol IV motor / actuator designed for flame safeguard applications in industrial and commercial burner systems. It delivers 300 lb-in torque with a 24 Vac supply, and offers a field-adjustable stroke (90° or 160°) for precise control of burner valves or dampers. Built for durability and performance in harsh environments, it replaces earlier M941A/C/D motors and features robust electronic drive circuitry.

Key Features & Benefits

• Proportional Control – Regulated by a three-wire, 135 ohm input signal for accurate modulating, non-spring return operation (NSR).

• High Torque Output – 300 lb-in (≈34 Nm) torque with strong breakaway torque (600 lb-in) to handle heavy loads.

• Adjustable Stroke – Field-adjustable from 90° to 160°, symmetrical stroke, factory set at 90°.

• Solid Build & Reliability – Die-cast aluminum housing, durable double-ended 3⁄8″ square shaft, designed for vibration and flame safeguard duty.

• Wide Operating Temp – -40°F to +150°F (-40°C to +66°C) for reliable use in industrial environments.

• Power & Signal Specs – 24 Vac supply, 15 W nominal power consumption, 135-ohm proportional input.

• Dimensions & Mounting – ~6.45 in high x 5.5 in wide x 7.3 in deep (≈164 × 140 × 185 mm), supports dead-weight load on shaft up to 200 lb either end; combined load 300 lb.

Specifications

Applications & Compatibility

This motor/actuator is ideal for:

• Industrial oil or gas burner systems requiring modulating flame rate control

• Flow/valve actuators and dampers in flame safeguard or firing-rate control systems

• Replacements for older Honeywell M941A, C, D models

• Use in harsh or variable environment installations due to broad temperature rating

Compatible control schemes include proportional controllers or systems that accept 135-ohm input. Often paired with valves or dampers where precise, smooth modulation is required.

FAQs

Q: Is this a Non-Spring Return motor?
A: Yes — the M9494D1000 is NSR (non-spring return), meaning it does NOT return to a default position on loss of power.

Q: How fast is the motor at different stroke settings?
A: At factory stroke of 90°, timing is approximately 60 seconds. At 160°, it’s around 120 seconds. These timings can vary slightly depending on load.

Q: Can this motor drive both ends or modes?
A: Yes — double-ended shaft allows operation from either power‐end or auxiliary-end. Designed for normally closed (NC) or normally open (NO) dampers/valves depending on installation.

Q: What earlier models does it replace?
A: It is a direct replacement for Honeywell M941A, M941C, and M941D motors.

Why Buy From Apex Controls

• OEM Honeywell parts – genuine and factory spec tested

• Real-time stock & fast fulfillment (ships from U.S. warehouse)

• Expert support for correct sizing and installation

• Product guarantee and warranty, with full technical documentation

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