| PartNumber | W51-A122B1-20 | W51-A122B1-15 | W51-A122B1-10 |
| Description | Circuit Breakers 20A RCKR ACT RED ILL | Circuit Breakers 15A RCKR ACT RED ILL | Circuit Breakers 10A RCKR ACT RED ILL |
| Manufacturer | TE Connectivity | TE Connectivity | TE Connectivity |
| Product Category | Circuit Breakers | Circuit Breakers | Circuit Breakers |
| RoHS | E | E | E |
| Series | W51 | W51 | W51 |
| Type | Supplementary Protector | Supplementary Protector | Supplementary Protector |
| Current Rating | 20 A | 15 A | 10 A |
| Voltage Rating AC | 250 VAC | 250 VAC | 250 VAC |
| Voltage Rating DC | 50 VDC | 50 VDC | 50 VDC |
| Number of Poles | 1 Pole | 1 Pole | 1 Pole |
| Actuator Type | Rocker | Rocker | Rocker |
| Minimum Operating Temperature | 0 C | 0 C | 0 C |
| Maximum Operating Temperature | + 60 C | + 60 C | + 60 C |
| Illuminated | Illuminated | Illuminated | Illuminated |
| Height | 27.9 mm | 27.9 mm | 27.9 mm |
| Length | 21.8 mm | 21.8 mm | 21.8 mm |
| Termination Style | Quick Connect | Quick Connect | Quick Connect |
| Voltage Rating | 250 VAC | 250 VAC | 250 VAC |
| Width | 12.8 mm | 12.8 mm | 12.8 mm |
| Brand | TE Connectivity / P&B | TE Connectivity / P&B | TE Connectivity / P&B |
| Mounting Style | Snap In | Snap In | Snap In |
| Product Type | Thermal Circuit Breakers | Thermal Circuit Breakers | Thermal Circuit Breakers |
| Factory Pack Quantity | 200 | 200 | 200 |
| Subcategory | Circuit Breakers | Circuit Breakers | Circuit Breakers |
| Part # Aliases | 1-1423673-4 | 1-1423673-3 | 1-1423673-2 |
| Unit Weight | - | 0.320005 oz | 0.344027 oz |