SD Series
Ultra-slim user-friendly devices for protecting electronic
equipment and systems against surges on signal and I/O cabling
The SD Series is a range of surge protection devices combining
unparalleled packing densities, application versatility, proven
reliable hybrid circuitry, simple installation and optional ‘loop
disconnect’ facilities – features which make the series the
ultimate surge protection solution for process equipment, I/O
systems and communications networks. The exceptionally high packing
densities are the consequence of an ultra slim ‘footprint’ for
individual modules which can thus ‘double-up’ as feedback
terminals. Each module provides full hybrid surge protection for 2
and 3 wire loop protection.
SDM - NEW MODULAR DEVICE
The SD Modular (SDM) combines the tried and tested protection of
the well established SD series and adds modularity for ease of
maintenance. The user can change the surge protection module
without any interference with wiring. The SDM is backwards
compatible with the SD series which means users can upgrade to the
SDM when next carrying out maintenance upgrades. Available in all
of the voltages, 7,16,32 & 55 with a current capacity of 700mA, the
SDM represents a step forward in surge protection designed for
process control applications.
SDX
SDX units, available in 7V, 16V, 32V and 55V versions (SD07X,
SD16X, SD32X and SD55X respectively) are suitable for a wide range
of applications including THCs, 4-20mA loops, shut-down systems and
fire and gas detectors.
SD
In addition to the many beneficial features offered by SDX devices,
the SD variants fuse/disconnect package provides both fused
protection against fault currents and a convenient method of
isolating field circuitry from protected circuitry without needing
additional disconnect terminals. Also provided is a third
connection on the field and safe side of the protector in order to
terminate screens safely to earth.
SDR
The SDR Series has been specially designed to meet the requirements
for high speed data links with an extremely high bandwidth. SDR
units are available in a range of voltage variants enabling a wide
range of communication systems to be protected e.g. RS232, RS422,
RS485, Bus powered systems etc. These devices are classed as simple
apparatus and can therefore be used in hazardous areas without
affecting the certification of the circuit.
SD32T3, SDRTD, SDR3
This series of SD surge protectors offer excellent levels of
protection over all three wires in conjunction with minimal
footprint requirements. This is the most compact 3-wire surge
protector on the market.
SD32T3 is a three terminal SPD for 3-wire transmitters or sensors
SDRTD is designed specifically for Resistance Temperature Detectors
SDR3 is a three terminal SPD for high bandwidth applications
Model
SD07
SD16
SD32
SD55
SD07R
SD16R
SD32R
SD55R
SD07X
SD16X
SD32X
SD55X
SD32T3
SD07R3
SD16R3
SD32R3
SD55R3
SDRTD
SDPSTN
SD150X
SD275X
Part Number & Description
Digital Input
MTL4501-SR 1ch DI failsafe solid-state output + LFD alarm
MTL4504 1ch DI relay output + LFD alarm + phase reversal
MTL4510 4ch DI solid-state output
MTL4510B 4ch DI multifunction solid-state output
MTL4511 1ch DI relay output
MTL4513 2ch DI solid-state output
MTL4514/B 1ch DI relay output + LFD alarm
MTL4516 2ch DI relay output
MTL4516C 2ch DI with changeover relay output
MTL4517 2ch DI relay output + LFD alarm
Digital Output
MTL4521 Loop powered solenoid driver
MTL4521L Loop powered solenoid driver IIC
MTL4523 Solenoid driver with LFD
MTL4523L Loop powered solenoid driver + LFD
MTL4523R Solenoid driver with LFD
MTL4523V/VL Solenoid/Alarm driver with voltage control
MTL4524 Switch operated solenoid driver
MTL4524S Switch operated solenoid driver, 24V override
MTL4525 Switch operated solenoid driver low power
MTL4526 2ch switch operated relay
Analogue Input
MTL4541 1ch 2/3 wire Transmitter repeater
MTL4541A 1ch Transmitter repeater, passive input
MTL4541AS 1ch Transmitter repeater, passive input, current sink
MTL4541B MTL4041B replacement
MTL4541P MTL4041P replacement
MTL4541S 1ch 2/3 wire Transmitter repeater, current sink
MTL4544 2ch 2/3 wire Transmitter repeater
MTL4544A 2ch Transmitter repeater, passive input
MTL4544AS 2ch Transmitter repeater, passive input, current sink
MTL4544B MTL4044 replacement
MTL4544D 2/3 wire transmitter repeater, dual output
MTL4544S 2ch 2/3 transmitter repeater, current sink
Analogue Output
MTL4546 1ch 4-20mA smart isolating driver + LFD
MTL4546C 1ch 4-20mA smart isolating driver + oc LFD
MTL4546Y 1ch 4-20mA smart isolating driver + oc LFD
MTL4549 2ch 4-20mA smart isolating driver + LFD
MTL4549C 2ch 4-20mA smart isolating driver + oc LFD
MTL4549Y 2ch 4-20mA smart isolating driver + oc LFD
Temperature Input
MTL4575 1ch Temperature converter with alarm
MTL4576-RTD 2ch Temperature converter, RTD
MTL4576-THC 2ch Temperature converter, THC
MTL4581 1ch mV/THC isolator for low-level signals
Pulse and Vibration
MTL4531 1ch vibration probe interface
MTL4532 1ch pulse isolator, digital or analogue output
MTL4533 2ch vibration probe interface
Fire and Smoke
MTL4561 2ch loop-powered, for fire and smoke detectors
General
MTL4599 Dummy isolator
MTL4599N General purpose feed-through module
MTL5018AC
MTL5501-SR
MTL5510
MTL5510B
MTL5511
MTL5513
MTL5514
MTL5514D
MTL5516C
MTL5517
MTL5521
MTL5522
MTL5523
MTL5523V
MTL5524
MTL5525
MTL5526
MTL5541
MTL5541A
MTL5541AS
MTL5541S
MTL5544
MTL5544A
MTL5544AS
MTL5544D
MTL5544S
MTL5546
MTL5546Y
MTL5549
MTL5549Y
MTL5573
MTL5575
MTL5576-RTD
MTL5576-THC
MTL5581
MTL5582
MTL5582B
MTL5531
MTL5532
MTL5561
MPA5500
MTL5051
MTL5053
MTL5314
MTL5599
Company Introduction
Great System In.(GSI) a name synonymous with Process Control
Instrumentation and Electrical and Instrument and Solution Provider
have established themselves as a Quality Leader since its inception
in 1998 based at Hong Kong ( China ).
Our Advantage:
Best possible prices and delivery time
Long time experience in the field
Well trained staff
Own warehouse facilities
Best relationships with branch office of manufacture
Flexible and individual service for you
Cheap and safe forwarder for shipments (air)
Frequently Asked Questions:
Q: Does your goods are new and original?
A: Yes, they are new and original.
Q: How long warranty?
A: One-year warranty.
Q: Does any certificates can be provided?
A: Yes, it depends on what product you request, please check
details with our sales.
Q: Varied payment methods.
A: We adopt T/T, alipay and paypal and Currency in EURO,USD,RMB
Q: SHIPPING:
A: We can shipping all over the world.via DHL,UPS,Fedex,TNT and
IPS,PDE,BRE,KARAPOST etc.
Our Product Range:
Transmitter, Safety barries, Flow meters, Probe, Sensor,
Transducer. Valves,Analysis meter, Positioner, Acuator, etc.
