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Item 9 Of 10
24 Vac Modutrol IV Motor, 150 lb-in


150 lb-in, NSR, Proportional Flame Safeguard Firing Rate, 2 Aux. Switches, 24V

  • Product Info
  • Literature
  • Accessories & Replacement Parts


Reversing, proportional motors used to drive burner firing rate valves, dampers or auxiliary equipment. Replace M941A,C,D motors.


  • Designed for flame safeguard applications in commercial/industrial oil or gas burner system.
  • Vibration resistant electronic drive circuit.
  • Regulated by three-wire proportional controller.
  • Stroke is field-adjustable to 90 or 160 degrees.

Product Specifications

Dimensions (in.)
6.45 in high x 5.5 in wide x 7.3 in deep
Dimensions (mm)
164 mm high x 140 mm wide x 185 mm deep
Item Type
50 Hz; 60 Hz
Approvals, Underwriters Laboratories Inc.
Listed: File No. E4436, Guide No. XAPX for USA and Canada
Supply Voltage
24 Vac
Power Consumption
15 W
90 degree stroke-- 30 seconds, 160 degree stroke-- 60 seconds
Ambient Temperature Range (F)
-40 F to +150 F
Ambient Temperature Range (C)
-40 C to +66 C
Input Signal
135 ohm
Internal Auxiliary Switch
Auxiliary Switch Ratings
120 Vac-- 7.2 AFL, 43.2 ALR, 40 VA pilot duty opposite contact; At 240 Vac-- 3.6 AFL, 21.6 ALR, 40 VA pilot duty opposite contact
Adjustable; 90 to 160 degrees, Symmetrical
Shaft Dimensions (in.)
double-ended, 3/8 in. square
Torque Rating (lb-in.)
150 lb-in.
Torque Rating (Nm)
17 Nm
Additional Torque Ratings (lb-in.)
Breakaway-- 300 lb-in.
Additional Torque Ratings (Nm)
Breakaway-- 34.0 Nm
Auxiliary Switch Setting
54 and 8 degrees
Shaft Dimensions (mm)
double-ended, 9.5 mm square
Deadweight Load on Shaft
Either End-- 200 lb (300 lb combined power and auxiliary shafts); 90.8 kg (136 kg combined power and auxiliary shafts);



Linkage to connect Modutrol motor to butterfly valve