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Siemens 5SU1354-7LB25 — Residual Current Breakers (RCCB/RCBO)

Siemens 5SU1354-7LB25 SENTRON RCBO, 25 A C-curve, 10/20 kA

MPN5SU1354-7LB25
Active

Siemens SENTRON 5SU1354-7LB25 RCBO, 1P+N, C-curve, 25 A rated at 30 °C, 10 kA per EN 60898 / 20 kA per IEC 60947-2, short-time delayed G, super resistant K, 77 mm depth, 36 mm width.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

5SU1354-7LB25 — Electrical Ratings
ParameterValue
Number of poles2
Overvoltage categoryIII
5SU1354-7LB25 — Identification
ParameterValue
Product designationRCBO
Product design / constructionShort-time delayed G, super resistant K
5SU1354-7LB25 — Mechanical
ParameterValue
Mounting positionany
Width in modular units2
Maximum75 °C
Minimum-40 °C
Width36 mm
Height90 mm
Depth77 mm
Installation depth70 mm
5SU1354-7LB25 — Environmental
ParameterValue
IP degree of protectionIP20, if the distribution board is installed, with connected conductors
5SU1354-7LB25 — Electrical
ParameterValue
Tripping Characteristic ClassC

Product details

The thermal derating table is provided: 23.5 A at 40 °C, 22.75 A at 45 °C, 21.75 A at 50 °C, 20.25 A at 55 °C and 60 °C, 19.25 A at 65 °C, and 18.25 A at 70 °C. The 20 kA figure gives headroom for high-fault locations near a transformer or in an industrial distribution board where prospective short-circuit current exceeds 10 kA. The design variant is short-time delayed G (residual-current element with intentional delay to coordinate with downstream RCDs) and super resistant K (high immunity to nuisance tripping from surge currents and voltage spikes).

Installation depth behind the panel is 70 mm; the overall depth including terminals is 77 mm. Height is 90 mm. Halogen-free and silicon-free construction — important for panels in environments where outgassing from a fault could corrode nearby contacts or where clean-room / food-grade specifications apply. Pollution degree 2 (normally non-conductive, occasional condensation). Test circuit requires a minimum of 195 V to operate the test button — verify the phase-to-neutral voltage at the installation point meets this threshold for periodic functional testing.

Frequently asked questions

What is the breaking capacity of the 5SU1354-7LB25?

10 kA per EN 60898 and 20 kA per IEC 60947-2. The 20 kA rating applies under the industrial standard, giving higher fault-current headroom.

How do I get current pricing and availability for the 5SU1354-7LB25?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

Will the 5SU1354-7LB25 drop into a panel specified around the 5SU9354-7KK16?

Both are 1P+N RCBOs in the SENTRON family with the same 36 mm width and 2 MW footprint, so the mechanical fit and wiring are identical. The difference is in the residual-current characteristic: the 5SU1354-7LB25 is short-time delayed G / super resistant K, while the 5SU9354-7KK16 uses a different characteristic — verify the selectivity and nuisance-trip requirements of your circuit before substituting.

MPN
5SU1354-7LB25