Bulletin M-2
General Description: Ordering Instructions:
* Machine Type Transformer * Order by model number shown
* Stacked Core * Add "X" to model number if transformer is to be fully potted
* Frame Cross Section 9 1/2" X 13 3/8" * Specify "primary conduit opening" or "primary cable clamp
block" ("primary conduit opening" furnished standard)
KVA Rating Secondary No. of Tap Switch RWMA Model Number Weight Dwg. Frame Turns Ratio 440 Volt
110 C Rise Voltage Taps Location Pad Size 220V/60 Hz 440V/60 Hz Approx. No. Letter Tap 1 Tap 2 Tap 3 Tap 4 Tap 5 Tap 6 Tap 7 Tap 8
  4.0 to 7.9   End Mount 1 M22650NB1BML M44650NB1BML 319 R1206                  
50 Volts 6   2 M22650NB1BNL M44650NB1BNL 322   NB 110:1 96:1 83:1 73:1 63:1 55:1 NA NA
      Side Mount 1 M22650NB1FML M44650NB1FML 339 R1306                  
        2 M22650NB1FNL M44650NB1FNL 342                    
  3.6 to 10.0   End Mount 1 M22650NL1BML M44650NL1BML 369 R1206                  
50 Volts 8   2 M22650NL1BNL M44650NL1BNL 372   NL 119:1 98:1 81:1 69:1 61:1 54:1 49:1 44:1
      Side Mount 1 M22650NL1FML M44650NL1FML 389 R1306                  
        2 M22650NL1FNL M44650NL1FNL 392                    
  5.7 to 10.0   End Mount 1 M22675NL1BML M44675NL1BML 369 R1206                  
75 Volts 8   2 M22675NL1BNL M44675NL1BNL 372   NL 77:1 71:1 65:1 59:1 54:1 50:1 47:1 44:1
      Side Mount 1 M226575NL1FML M44675NL1FML 389 R1306                  
        2 M22675NL1FNL M44675NL1FNL 392                    
  6.8 to 10.0   End Mount 1 M226100NL1BML M446100NL1BML 369 R1206                  
100 Volts 6   2 M226100NL1BNL M446100NL1BNL 372   NL 65:1 60:1 55:1 51:1 47:1 44:1 NA NA
      Side Mount 1 M226100NL1FML M446100NL1FML 389 R1306                  
        2 M226100NL1FNL M446100NL1FNL 392                    
Standard Features: Optional Features:
* Class "F" insulation * Voltages and frequencies other than shown available on request
* Solderless lug connections for primary wiring * Thermostats
* Secondary pad sizes and hole spacings to RWMA * Special secondary pad sizes available on request
standard * Remote tap switch
* Secondary end positively sealed against
contimination