Eaton / Cutler-Hammer FAZ-D40/2-NA Miniature Circuit Breaker
- 40A
- 2 Pole
- DIN Rail
Quantity
Eaton / Cutler-Hammer FAZ-D40/2-NA - 40A 2 Pole Miniature Circuit Breaker
New
Quantity
Description
Built for demanding industrial environments, this 40A two-pole miniature circuit breaker provides robust branch protection for highly inductive loads. The D-curve trip characteristic allows it to handle the significant inrush currents generated by motors and transformers without nuisance tripping. It mounts seamlessly onto standard 35mm DIN rail systems in commercial control panels. This component is an exact drop-in replacement for the discontinued WMZT2D40. Rated at 10 kAIC at 240VAC.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | FAZ-D40/2-NA |
| Series | FAZ-NA |
| Amperage | 40A |
| Poles | 2 |
| Mounting Style | DIN Rail |
| Voltage | 240VAC, 96VDC |
| Phase | 1 |
| AIC Rating | 10kA @ 240VAC, 10kA @ 96VDC |
| Frame Type | FAZ |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | DIN Rail Systems, Control Panels |
| Wire Gauge | 18-6 AWG |
| Max Wire | 6 AWG |
| Min Wire | 18 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Curve | D |
| Trip Adjustability | Fixed |
| Available Options | Auxiliary Switch, Busbar System, Lockout Attachment, Shunt Trip, Undervoltage Release |
|---|---|
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | ABS, CE, CSA, cULus, DNV, IEC, Lloyd's, UL, VDE |
| Temp Rating | -25C to 75C |
| Construction Features | Current Limiting, HACR Rated, Reverse Feed, Trip-Free Mechanism, Visual Trip Indicator |
Product FAQs
8 answersWhat does the D trip curve signify on the FAZ-D40/2-NA?
The D-curve indicates a magnetic trip point of 10 to 20 times the rated current. This makes it ideal for highly inductive loads with significant inrush currents, such as motors, transformers, and solenoid valves, preventing nuisance tripping during startup.
Can I use the FAZ-D40/2-NA to replace a discontinued WMZT2D40 breaker?
Yes, the Eaton FAZ-D40/2-NA is an exact drop-in replacement for the obsolete WMZT2D40 miniature circuit breaker.
Is the FAZ-D40/2-NA rated for branch circuit protection?
Yes, the -NA suffix indicates this breaker is UL 489 listed for branch circuit protection, unlike standard UL 1077 supplementary protectors. It is also CSA C22.2 No. 5 and IEC 60947-2 compliant.
What type of DIN rail is required to mount this 2-pole breaker?
The FAZ-D40/2-NA mounts directly onto a standard 35mm DIN rail using a spring clip. The two-pole module has a total width of approximately 35mm, or 17.5mm per pole.
Does the FAZ-D40/2-NA feature a trip-free mechanism?
Yes, it utilizes a trip-free design. The breaker will still trip internally during an overload or short circuit even if the handle is physically held in the ON position.
How can I visually verify the contact status of this breaker?
The breaker features a color-coded indicator on the front face that provides immediate visual confirmation of the contact position. It displays red when the contacts are closed (ON) and green when they are open (OFF).
Is the Eaton FAZ-D40/2-NA a current-limiting breaker?
Yes, it features a current-limiting design that provides fast short-circuit interruption. This reduces the peak let-through energy, offering superior protection for downstream circuit components.
Can the FAZ-D40/2-NA be reverse fed?
Yes, power to this miniature circuit breaker can be fed from either the line or the load side, offering flexible wiring options in control panels.
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