S201-C16NA miniature breaker: 16 A C curve and switched-neutral circuit fit
ABB lists order code 2CDS251103R0164 as the S201-C16NA miniature circuit breaker. The NA configuration adds a disconnecting neutral to the protected phase pole. ABB product literature associates this S200 family with overcurrent protection against overload and short circuits. The individual installation must still be checked for voltage, fault current, conductor size and local code requirements.
Key technical data
| Technical item | Verified value / selection note |
|---|---|
| ABB order code | 2CDS251103R0164 |
| Type designation | S201-C16NA |
| Rated current | 16 A |
| Trip characteristic | C |
| Pole configuration | 1+N, with disconnecting neutral |
| Product group | System pro M compact S200 series |
| Mounting | DIN rail; verify busbar and enclosure compatibility |
| Breaking capacity | Use the rating for the exact product/version and system voltage |
The values above are intended to identify the listed version and support an initial technical review. Confirm applicable standards, rating conditions, installed accessories and the current ABB documentation for the serial number or revision before design approval, replacement or commissioning.
Application and engineering focus
A 16 A rating and C trip characteristic do not automatically make this breaker appropriate for every branch circuit. Compare the expected load current, starting current, cable capacity, earth-fault loop impedance and required disconnection time. Confirm whether the neutral-disconnection feature matches the circuit and panel design. This device should not be treated as a residual-current breaker; earth leakage protection requires the appropriate separate device or combined product.
Configuration, compatibility and related references
The S201-C16NA has a 1+N arrangement; use the manufacturer’s terminal and wiring diagram to identify line and neutral. Confirm supply orientation, comb busbar type, adjacent accessories, pole spacing and available enclosure depth. Do not substitute a standard S201-C16 or another S200 variant without verifying the neutral-pole requirement, trip curve and interruption rating. Keep model suffixes and order codes together in the maintenance record.
The related designations below are comparison references, not automatic substitutes. Confirm the complete type code, order number, interface, ratings and revision against the approved application before selecting an alternative.
- S201-C16
- S201-C16NA
Installation and commissioning checks
Installation and replacement must be performed on an isolated circuit by qualified personnel. Verify the protective device against the circuit schedule and fault study. Tighten terminals to the stated torque and ensure conductors are correctly stripped and clamped. After energizing, confirm circuit labeling, neutral switching behavior and functional trip test requirements. Investigate nuisance trips at the load or wiring before changing the trip rating.
During commissioning, verify the nameplate, configuration, wiring and diagnostics before enabling normal operation. Test the relevant signal path or protection response end to end under controlled conditions. Record settings and as-left measurements, and investigate abnormal values at the sensor, load, wiring or system configuration before replacing components.
Ordering, replacement and application information
For a quotation or replacement review, provide the complete designation 2CDS251103R0164, S201-C16NA, ABB order code where available, serial or hardware revision, quantity, installation environment, connected equipment, interface requirements and target delivery date. Include a clear rating-label photograph and relevant wiring, loop or panel drawing when possible.
Ask the supplier to confirm the exact configuration, accessories, revision and any approved successor in writing. Do not select solely from a family name or product photograph. For safety, grid-protection, medium-voltage or regulated applications, obtain review by the responsible qualified engineer and follow local codes and the manufacturer’s instructions.
