Please see below for a crossover of the most common Westlock part numbers.
| NEMA 4 Aluminum (Watchman) |
MONITEUR |
Westlock |
| SPDT Mechanical, Indicator |
FMYB-E120 |
2004NBY2A2M0200 |
| Gold Plated SPDT, Indicator |
FMYB-E320 |
5004NBY2B2M0900 |
| DPDT Mechanical, Indicator |
FMYB-E420 |
2004NBY2A2M0400 |
| 3A Proximity, Indicator |
FMYB-E220 |
9044NBY2B2M0600 |
| 1A Proximity, indicator |
FMYB-ET20 |
9044NBY2B2M1200 |
| Basic Proximity, Indicator |
FMYB-ET20 |
9044NBY2B2M1200 |
| NJ2-N3, Indicator |
FMYB-E820 |
5004NBY2B2M0800 |
|
|
|
| SPDT Mechanical, No Indicator |
FFNB-E120 |
2004NFC2A2M0200 |
| Gold Plated SPDT, No Indicator |
FFNB-E320 |
5004NFC2B2M0900 |
| DPDT Mechanical, No Indicator |
FFNB-E420 |
2004NFC2A2M0400 |
| 3A Proximity, No Indicator |
FFNB-E220 |
9044NFC2B2M0600 |
| 1A Proximity, No indicator |
FFNB-ET20 |
9044NFC2B2M1200 |
|
|
|
| NEMA 4 Plastic (Survivor) |
|
|
| SPDT Mechanical, Indicator |
PMYB-E120 |
1040NBY2A2M0200 |
| Gold Plated SPDT, Indicator |
PMYB-E320 |
n/a |
| DPDT Mechanical, Indicator |
PMYB-E420 |
n/a |
| 3A Proximity, Indicator |
PMYB-E220 |
9358NBY2B2M0600 |
| 1A Proximity, indicator |
PMYB-ET20 |
9358NBY2B2M1200 |
| Basic Proximity, Indicator |
PMYB-ET20 |
9358NBY2B2M1200 |
| NJ2-N3, Indicator |
PMYB-E820 |
5044NBY2B2M0800 |
|
|
|
| SPDT Mechanical, No Indicator |
PFNB-E120 |
1040NFC2A2M0200 |
| Gold Plated SPDT, No Indicator |
PFNB-E320 |
n/a |
| DPDT Mechanical, No Indicator |
PFNB-E420 |
n/a |
| 3A Proximity, No Indicator |
PFNB-E220 |
9358NFC2B2M0600 |
| 1A Proximity, No indicator |
PFNB-ET20 |
9358NFC2B2M1200 |
|
|
|
| Division 2 Plastic (Survivor-II) |
|
|
| 3A Proximity, Indicator |
RMYS-E220 |
9468NBY2B2M0600 |
| 1A Proximity, indicator |
RMYS-ET20 |
9468NBY2B2M1200 |
|
|
|
| Nema 7 Explosion-Proof (Sentinel) |
|
|
| SPDT Mechanical, Indicator, 2 switches |
AMYB-E120 |
2007NBY2B2M0200 |
| SPDT Mechanical, Indicator, 4 switches |
AMYB-E140 |
2007NBY2B4M0200 |
| SPDT Mechanical, Indicator, 6 switches |
AMYB-E160 |
2007NBY2B6M0200 |
| Gold Plated SPDT, Indicator |
AMYB-E320 |
2007NBY2B9M0200 |
| DPDT Mechanical, Indicator |
AMYB-E420 |
2007NBY2B2M0400 |
| 3A Proximity, Indicator, 2 switches |
AMYB-E220 |
9479NBY2B2M0600 |
| 3A Proximity, Indicator, 4 switches |
AMYB-E240 |
9479NBY2B4M0600 |
| 3A Proximity, Indicator, 6 switches |
AMYB-E260 |
9479NBY2B6M0600 |
| 1A Proximity, indicator, 2 switches |
AMYB-ET20 |
9479NBY2B2M1200 |
| 1A Proximity, indicator, 4 switches |
AMYB-ET40 |
9479NBY2B4M1200 |
| 1A Proximity, indicator, 6 switches |
AMYB-ET60 |
9479NBY2B6M1200 |
| Basic Proximity, Indicator |
AMYB-ET20 |
9479NBY2B2M1200 |
| NJ2-N3, Indicator |
AMYB-E820 |
5050NBY2B2M0800 |
| GO Switch, Indicator |
AMYB-E520 |
2007NBY2B2M0300 |
|
|
|
| SPDT Mechanical, Indicator, 2 switches |
AFNB-E120 |
2007NFC2B2M0200 |
| SPDT Mechanical, Indicator, 4 switches |
AFNB-E140 |
2007NFC2B4M0200 |
| SPDT Mechanical, Indicator, 6 switches |
AFNB-E160 |
2007NFC2B6M0200 |
| Gold Plated SPDT, No Indicator |
AFNB-E320 |
2007NFC2B9M0200 |
| DPDT Mechanical, No Indicator |
AFNB-E420 |
2007NFC2B2M0400 |
| 3A Proximity, No Indicator |
AFNB-E220 |
9479NFC2B2M0600 |
| 1A Proximity, No indicator |
AFNB-ET20 |
9479NFC2B2M1200 |