| PartNumber | 3120-F521-N7T1-W14FR3-2A | 3120-F521-N7T1-W14FR3-3A | 3120-F521-N7T1-W14FR3-4A |
| Description | Circuit Breakers | Circuit Breakers | Circuit Breakers |
| Manufacturer | E-T-A Circuit Breakers | E-T-A Circuit Breakers | E-T-A Circuit Breakers |
| Product Category | Circuit Breakers | Circuit Breakers | Circuit Breakers |
| Series | 3120-F | 3120-F | 3120-F |
| Type | Thermal Overcurrent Circuit Breaker | Thermal Overcurrent Circuit Breaker | Thermal Overcurrent Circuit Breaker |
| Current Rating | 2 A | 3 A | 4 A |
| Voltage Rating AC | 240 VAC | 240 VAC | 240 VAC |
| Voltage Rating DC | 50 VDC | 50 VDC | 50 VDC |
| Number of Poles | 2 Pole | 2 Pole | 2 Pole |
| Actuator Type | Rocker | Rocker | Rocker |
| Minimum Operating Temperature | - 30 C | - 30 C | - 30 C |
| Maximum Operating Temperature | + 60 C | + 60 C | + 60 C |
| Illuminated | Illuminated | Illuminated | Illuminated |
| Height | 21 mm | 21 mm | 21 mm |
| Length | 41 mm | 41 mm | 41 mm |
| Termination Style | Blade | Blade | Blade |
| Voltage Rating | 50 VDC, 240 VAC | 50 VDC, 240 VAC | 50 VDC, 240 VAC |
| Width | 33 mm | 33 mm | 33 mm |
| Brand | E-T-A | E-T-A | E-T-A |
| Mounting Style | Snap In | Snap In | Snap In |
| Product Type | Thermal Circuit Breakers | Thermal Circuit Breakers | Thermal Circuit Breakers |
| Factory Pack Quantity | 1 | 1 | 1 |
| Subcategory | Circuit Breakers | Circuit Breakers | Circuit Breakers |