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Overview
- 4-pole design for balanced DC circuit protection
- Z-characteristic trip curve for rapid low-level overload response
- 10kA interrupting capacity at 600VDC per UL 489
- Compact 27mm pole width for DIN rail mounting
- UL 489, cULus, IEC, and CE certified for global compliance
Specifications
Application | Mainly used for controlling 3-phase motors and generally for controlling power circuits up to 690 V AC and 220 V DC. The contactors can also be used for many other applications such as bypass, capacitor switching, lighting, DC power circuits. |
Connection Type | Bus connection / Multi-function terminals |
Current Rating | 40 A |
Mounting Type | DIN Rail |
Poles | 4 |
Series | S804U |
Size | 82x110x108mm |
Size | 27mm pole width |
Special Features | S804U-UCZ40 4 Pole Z Characteristic 40A 10kA 600VDC High Performance Circuit Breaker HPCB |
Standard | RoHs, CSA, cUL, CE, GOST |
Type | Contactors |
Voltage Rating | 600 VDC |
Package Dimensions (L x W x H) | 4.37 IN x 5.91 IN x 3.9 IN |
Package Dimensions (L x W x H) | 11.0998 cm x 15.0114 cm x 9.906 cm |
Package Weight (Imperial) | 2.230 L |
Package Weight (Metric) | 1.012 kg |
Frequently Asked Questions
What is the rated voltage for this circuit breaker?
The rated voltage is 600VDC according to UL 489 standards.
What is the interrupting capacity of the S804U-UCZ40?
The interrupting capacity is 10kA at 600VDC.
What certifications does this breaker have?
The breaker is UL 489, cULus, IEC, and CE certified for global installation compliance.
What is the trip characteristic of this breaker?
The breaker features a Z-characteristic trip curve for rapid response to low-level overloads.
What is the pole width of the S804U-UCZ40?
The pole width is 27mm, designed for standard DIN rail mounting.
What is the operating temperature range?
The breaker operates reliably in ambient temperatures from -25°C to 60°C.
Can this breaker be used in reverse feed applications?
Yes, the S804U-UCZ40 supports reverse feed applications.
What is the tightening torque for terminal connections?
The tightening torque for terminal connections is 3.5 Nm (31 in-lb).
How to Install the ABB S804U-UCZ40 Circuit Breaker
Step-by-step guide for mounting and wiring the ABB S804U-UCZ40 4-pole DC circuit breaker on a DIN rail.
Estimated time: 15m
Tools needed:
Phillips screwdriver, Wire strippers, Crimping tool (if needed)
Supplies needed:
DIN rail, Mounting screws, Copper conductors (14 AWG–2 AWG for 10–32A range)
- Mount the breaker on the DIN rail
Position the breaker on the DIN rail and press firmly until it snaps into place.
- Connect the conductors
Strip the wire ends to the appropriate length (14 AWG–2 AWG for 10–32A range) and insert into the terminals. Tighten to 3.5 Nm (31 in-lb).
- Verify secure connections
Pull gently on each wire to ensure it is securely fastened. Confirm the breaker is properly seated on the DIN rail.
Frequently Asked Questions about ABB - Electrification
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