MTL Safety Barrier SD32X
The Crouse-Hinds series MTL SD range is a series 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 range 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.
SDX models
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.
| Model | Nominal voltage+ (Un) (Vdc) (Vac) | Nominal current (In) (mA) | Series resistance (Ω/line) | Max. leakage current (µA) | Rated voltage *MCOV) (Uc) | Voltage protection level (Up) @1kV/µs (V) | Residual voltage @isn (V) | Bandwidth (frequency) (fG) | Special feature |
| SD07 | 7 | 5 | 250 | 4.2† | 500 | 7.7 | <12 | 30 | 25kHz | Fuse disconnect |
| SD16 | 16 | 11 | 250 | 4.2† | 5 | 17 | <25 | 40 | 25kHz | Fuse disconnect |
| SD32 | 32 | 22 | 250 | 4.2† | 5 | 36 | <45 | 60 | 25kHz | Fuse disconnect |
| SD55 | 55 | 38 | 250 | 4.2† | 5 | 62 | <90 | 100 | 25kHz | Fuse disconnect |
| SD07R | 7 | 5 | 400 | 2.7 | 500 | 7.7 | <12 | 30 | 50MHz | High bandwidth |
| SD16R | 16 | 11 | 400 | 4.7 | 5 | 17 | <25 | 40 | 50MHz | High bandwidth |
| SD32R | 32 | 22 | 400 | 10 | 5 | 36 | <45 | 60 | 50MHz | High bandwidth |
| SD55R | 55 | 38 | 400 | 10 | 5 | 62 | <90 | 100 | 50MHz | High bandwidth |
| SD07X | 7 | 5 | 400 | 2.2 | 500 | 7.7 | <12 | 30 | 25kHz | Low resistance |
| SD16X | 16 | 11 | 400 | 2.2 | 5 | 17 | <25 | 40 | 25kHz | Low resistance |
| SD32X | 32 | 22 | 400 | 2.2 | 5 | 36 | <45 | 60 | 25kHz | Low resistance |
| SD55X | 55 | 38 | 400 | 2.2 | 5 | 62 | <90 | 100 | 25kHz | Low resistance |
| SD32T3 | 32 | 22 | 400 | 2.2^ | 5 | 36 | <45 | 75 | 720kHz | 3Terminal |
| SD07R3 | 7 | 5 | 400 | 2.7 | 500 | 7.7 | <12 | 30 | 50MHz | 3Terminal |
| SD16R3 | 16 | 11 | 400 | 4.7 | 5 | 17 | <25 | 40 | 50MHz | 3Terminal |
| SD32R3 | 32 | 22 | 400 | 10 | 5 | 36 | <45 | 60 | 50MHz | 3Terminal |
| SD55R3 | 55 | 38 | 400 | 10 | 5 | 62 | <90 | 100 | 50MHz | 3Terminal |
| SDRTD | 1 | 0.75 | 10< | 2.7 | 0.3 | 5 | <12 | 38 | 50MHz | 3-wire RTD |
| SDPSTN | 162 | 114 | 550 | 4.7 | 5 | 175 | <200 | 235 | 4MHz | PSTN |
| | | | | | ac rms | dc | ac rms | | | | |
| SD150X | 150 | 120 | 3A‡ | 0.1 | 50 | 170 | 130 | <400 | 450 | —— | High current |
| SD275X | 320 | 240 | 3A‡ | 0.1 | 50 | 360 | 275 | <700 | 850 | —— | High current |
Note: all figures are typical at +25°C unless otherwise stated; *standard fuse; +over full working
temperature range; †at 20mA with a 250mA standard fuse; ‡these units need external 3A fuses; ^Signal;
**Power & Common; <maximum energizing current depends upon RTD resistance. See page 2 for details.
Related Part Number:
| HCU16 | MTL5521 | MTL4546Y | MTL7761PAC |
| HCU3700 | MTL5522 | MTL4549Y | MTL7765AC |
| HM64RIB20-1.0 | MTL5531 | MTL4573 | MTL7787+ |
| HM64RIB20-1.5 | MTL5532 | MTL4575 | MTL7787P+ |
| HMM64 | MTL5541 | MTL4646Y | MTLCPS16 |
| HMRIB16-1.0 | MTL5541S | MTL4850 | NJ5-18GK-N |
| HMS64 | MTL5544 | MTL4851 | SD150X |
| HTP-SC32 | MTL5544D | MTL4852 | SD32 |
| MTL4044D | MTL5546 | MTL5018 | SD32X |
| MTL4511 | MTL5546Y | MTL5032 | SDRTD |
| MTL4516 | MTL5561 | MTL5042 | SLP32D |
| MTL4516C | MTL5573 | MTL5044 | TP48-3-I-NDI |
| MTL4521 | MTL5575 | MTL5049 | TP48-3-N-NDI |
| MTL4541 | MTL5582B | MTL5511 | TP48-4-I-NDI |
| PCL45USB | MTL7728+ | MTL5514D | TP48-4-N-NDI |
| MTL4544 | MTL7756AC | MTL5516 | TP48-N-NDI |
| MTL4544D | MTL7760AC | MTL5516C | ZB24571 |
Product Tags:
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