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KL9550 | System terminal, surge filter system and field supply

KL9550 | System terminal, surge filter system and field supply

KL9550 | System terminal, surge filter system and field supply

Power LED
Power LED
Power contact
Power contact
Output +24 V
+24 V
0 V
Input +24 V
Output 0 V
+24 V
0 V
0 V
Top view 
Contact assembly 
KL9550 | System terminal, surge filter system and field supply

KL9550 | System terminal, surge filter system and field supply

The KL9550 system terminal contains an overvoltage filter for the 24 V field and system supply. The filter protects the Bus Terminal from line-bound surge voltages that can occur due to high-energy disturbances such as switching overvoltages at inductive consumers or lightning strikes at the supply lines. The KL9550 protects the Bus Terminal station from damage in particularly harsh environments. The ship classification organizations require the use in shipbuilding applications and in the onshore/offshore sector.

Product status:

regular delivery

Product information

Technical dataKL9550
Nominal voltage24 V DC (-15%/+20%)
Surge filter field supplyyes
Surge filter system supplyyes
Rated current field supply≤ 10 A
Rated current system supply≤ 0.5 A
Weightapprox. 50 g
Operating/storage temperature-25…+60°C/-40…+85°C
Vibration/shock resistanceconforms to EN 60068-2-6/EN 60068-2-27
EMC immunity/emissionconforms to EN 61000-6-2/EN 61000-6-4
Protect. rating/installation pos.IP20/variable
Pluggable wiringfor all KSxxxx Bus Terminals
Approvals/markingsCE, UL, ATEX, IECEx, DNV GL
Ex markingATEX:
II 3 G Ex ec IIC T4 Gc
Ex ec IIC T4 Gc
Housing dataKL-12-8pinKS-12-8pin
Design formcompact terminal housing with signal LEDsterminal housing with pluggable wiring level
Dimensions (W x H x D)12 mm x 100 mm x 68 mm
Installationon 35 mm DIN rail, conforming to EN 60715 with lock
Side by side mounting by means ofdouble slot and key connection
Markinglabeling of the BZxxx series
Wiringsolid conductor (s), flexible conductor (st) and ferrule (f): spring actuation by screwdriver
Connection cross-sections*: 0.08…2.5 mm²,
st*: 0.08…2.5 mm²,
f*: 0.14…1.5 mm²
s*: 0.08…1.5 mm²,
st*: 0.08…1.5 mm²,
f*: 0.14…1.5 mm²
Connection cross-section AWGs*: AWG28…14,
st*: AWG28…14,
f*: AWG26…16
s*: AWG28…16,
st*: AWG28…16,
f*: AWG26…16
Stripping length8…9 mm9…10 mm
Current load power contactsImax: 10 A

*s: solid wire; st: stranded wire; f: with ferrule

Ordering information
KL9550System terminal, surge filter system and field supply
KS9550System terminal, surge filter system and field supply, pluggable wiring

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